The most frequent fossils are small sea animals like gastropods, brachiopods, coral, and crinoids. When mixed with sandstone, this suggests that the region was a warmer, shallow sea at the time these sediments were created. The hyphae of rocks is a result of flooding.
What are bryozoans?Little aquatic invertebrates called bryozoans dwell in colonies. Colonies of many species form exterior protective structures called exoskeletons that mimic coral prosthetic limbs. Most colonies are anchored to a structure, such as a rock or sunken branch.
How do fossils work?Any surviving indication of a once-living thing from a previous geological age is known as a fossil. Examples include exoskeletons, bones, shells, animal or microbe imprints in stone, things preserved in glass, locks, fossil pine, and DNA traces. The fossil record is a collection of all fossils.
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What is the probability of rolling a 6, then a 5, then a 4?
Name some body cells that have identical DNA.
Animals are divided into two groups; vertebrates and invertebrates. Animal classification is a matter of sorting out similarities and differences. This sorting process enables scientists to describe characteristics through the various levels of animal groups and subgroups. Among the most basic criteria by which animals are sorted is whether or not they possess a backbone. This single trait places an animal into one of two groups: the vertebrates (with backbone) or the invertebrates (without backbone). This represents a fundamental division among all animals.
What internal structure identifies an organism as an invertebrate?
Answer:
Maybe exoskeleton?
What are the 4 evidences that support the theory of evolution?
Four types of evidence for evolution are listed as follows:
1. The evolution of older species as seen in the fossil record.
2. the shared chemistry and anatomy of related biological species.
3. the geographical distribution of species that are linked.
4. the genetic alterations that have been observed in living things over many generations.
Organisms undergo gradual change over long periods of time by descent with modification. This transformation results from the organism's adaptation to its changing surroundings, climatic circumstances, style of life, etc. We can support the theory of evolution with some evidence. The following are the primary examples that bolster the theory: The structure of an organism has changed with time and is no longer the same as it was in the past, according to fossil evidence. According to evidence from embryology, different species that are descended from the same evolutionary ancestor share structural characteristics. In all earthly living organisms, the evolution of their basic chemical compositions and anatomical structures is fundamentally the same. No matter how complex the creature, whether they are tiny single-celled protozoa or incredibly complex organisms with billions of cells, they all begin as single cells and reproduce themselves by similar division methods (click this button to hear the term before it is pronounced). They all have a limited lifespan, get old, and die. Another cue concerning earlier evolutionary processes comes from the regional natural distribution of closely related species. It is clear that isolated, vast land masses and groups of islands commonly established their own distinct plant and animal species.
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Can someone plz help me on this plz
What are the four main causes of mutations?
Mutations are brought on by environmental factors, often known as mutagens. Mutagens include things like radiation, chemicals, and pathogenic agents. Mutations can happen spontaneously in nature.
An organism's phenotype, or outward traits, may or may not be affected by a mutation. Among the good and bad biological processes that mutations participate in include evolution, cancer, and the maturation of the immune system, including junctional variation. All genetic diversity is the outcome of mutation, which also justifies the actions of evolutionary processes like natural selection. For an adaptive immune response to be successful, antigen-presenting cells (APCs), which are necessary for the smooth operation of both cytotoxic and helper T cells, must be present.
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Match the following communication systems with their descriptions:
Please help!! I need the answer ASAP
Answer:
I think it's
7 - c
8 - a
9 - b
If this isn't correct please let me know so I can change it I am just trying to get you an answer.
please please help me for biology
Answer:
earthquakes and flooding
Explanation:
Answer:
Competition
Explanation:
Density-dependent limiting factors are factors that are dependent on the density of the species; for example, if the density is low, there is not much competition, so it won't be a limiting factor, but this isn't the case when density is high.
During an earthquake, tectonic plates move
WHAT IS THE OPPOSITE REACTION?
Answer: fault boundary
Explanation:
What happens if the Calvin cycle is inhibited?
Photosystem II cannot repair photodamage if the Calvin cycle is disturbed.
When the Calvin cycle enzymes' activity are impaired, photosynthetic organisms experience more Photosystem II photoinactivation (PSII). We investigated the chemical process generating this phenomenon in the single-celled green alga Chlamydomonas reinhardtii. When glycolaldehyde, which is known to block phosphoribulokinase, upset the Calvin cycle, the degree of photoinactivation of PSII increased. Glycolaldehyde's effects were strikingly similar to those of chloramphenicol, which blocks the start of protein synthesis in chloroplasts. A missense mutation was inserted into the ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) gene, which interrupted the Calvin cycle and enhanced PSII photoinactivation.
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Which of the following glands can be observed on the ventral surface of the sheep brain? View Available Hint(s) O Pineal gland O Olfactory bulb O Pituitary gland O Mammillary body
The ventral surface of the sheep brain contains several important glands, such as the pineal gland, the olfactory bulb, the pituitary gland, and the mammillary body.
The pineal gland, also known as the epiphysis cerebri, is a small endocrine gland that is located in the diencephalon, the middle part of the brain. The pineal gland produces the hormone melatonin, which helps to regulate the body's circadian rhythm, or internal clock. Melatonin helps to regulate the sleep-wake cycle, and its production is influenced by the amount of light that the body is exposed to.
The olfactory bulb, also known as the bulbus olfactorius, is a small structure located in the forebrain, the front part of the brain. The olfactory bulb is responsible for the sense of smell, and it receives input from the olfactory receptors located in the nose. The olfactory bulb is a key part of the olfactory system, which is responsible for detecting and identifying odors.
The pituitary gland, also known as the hypophysis, is a small endocrine gland that is located at the base of the brain, near the hypothalamus. The pituitary gland is considered the "master gland" of the body because it produces several hormones that regulate the activity of other endocrine glands, such as the thyroid and the adrenal glands.
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What are the 3 types of adaptations that enable an organism to survive?
Behavioral adaptations, physiological adaptations and structural adaptations are the three types of adaptations which enable an organism to survive.
All living organisms need to adapt in order to survive. There are three types of adaptations which can enable a particular organism to survive and they include the behavioral, physiological and structural adaptations.
Structural adaptations are basically the unique features present in an organism's body which help it to survive in a particular condition. For example, ducks have webbed feet which help them to swim. The changes in different processes that occur inside an organism's body include the physiological adaptations. For example, some spiders change the physiological processes in their body to weave webs using different spider silks. Behavioral adaptations are changes in the actions which allow the organism to survive. For example, coyotes communicate by howling at night.
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Where could humans be placed in the energy pyramid ?
Answer:
the top of the pyramid because they are the predators of some animals
Explanation:
How do you introduce energy conservation?
Energy cannot be created or destroyed; it can only be changed from one form to another, according to the rule of conservation of energy.
An isolated system's total energy is constant over time in accordance with the rule of conservation of energy. The law of energy conservation applies to all kinds of energy.
Most importantly, energy conservation can be accomplished by either using less energy or by using fewer services. First of all, conserving energy is crucial for preserving non-renewable energy sources. Additionally, the regeneration process for non-renewable energy sources takes centuries.
In the planning and construction of buildings, energy conservation is crucial. Since the 1970s, its prominence has grown. Concern about the implications of climate change has recently energy conservation is crucial, as concern over climate change and global warming has highlighted.
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Why is it important for a pregnant woman to know her Rhesus blood type, and the Rh blood type of the father of her baby?
Answer: One of the first tests a pregnant woman should expect is a blood-type test. This test checks her blood type and Rh factor. Her Rh factor may play a role in her baby's health, so it's important to know this information early in pregnancy.
Explanation: if you're Rh negative and your baby is Rh positive, your body might produce proteins called Rh antibodies after exposure to the baby's red blood cells. The antibodies produced aren't a problem during the first pregnancy. The concern is with your next pregnancy.
Proteins have all of the following properties except
1 enzymes
2signal molecules
3genetic material
4 transport
5 structural
Answer:
Option 3. Genetic material
Explanation:
which process involves the movement of water through a cell membrane?
Answer:
osmosis
Explanation:
water moves across cell membrane by diffusion In a process known as osmosis .
What are 4 things habitats provide?
The four important things which a habitat provides an organism are shelter, food, water and space.
A habitat is basically the place or the environment in which a particular organism lives. A habitat consists of both the biotic as well as abiotic factors. An organism can survive in a particular area if all its basic needs are met and the habitat therefore offers the organism with everything that it needs in order to survive which include a range of conditions.
The habitat provides an organism food, water and sunlight which are required for energy as well as growth. It also allows the organism to live and thrive there and therefore it provides shelter.
It also gives an organism space. Every organism needs different amount of space and therefore their habitats are specific to them, For example, big animals live in the forests and smaller animals like moles can burrow holes in the ground and survive.
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Explain how the activity simulates each of the following concepts as a process of natural selection (Variation, competition, struggle for survival, adaptation, environment, and selecting agent). Describe a specific example from this activity for each concept.
Examples of various concepts of the natural section are
Variation: Eye colour, body form, and disease resistance,
competition: Plants compete with each other for light exposure, temperature, humidity, pollinators, soil nutrients and growing space
struggle for survival: migration, hibernation, food collecting and storage, defensive actions, and child-rearing.
The term "natural selection" refers to the process through which populations of living organisms adapt and change. Because population members are naturally different, each member of a population is unique in some aspects. This variation demonstrates how some people are more likely than others to have characteristics that fit in with their environment.
More environment-adapted species typically survive and reproduce more frequently than less environment-adapted ones through a process called natural selection. For instance, tree frogs are occasionally eaten by birds and snakes.
Natural selection is the term for Charles Darwin's theory of evolution. Due to the scarcity of resources in nature, animals with heritable features that help in survival and reproduction frequently produce more offspring than their contemporaries, increasing the prevalence of such traits through successive generations.
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23. During replication, the two DNA strands_________
and each chain serves as
a________
for a new nucleotide chain. The sites where DNA replication
and separation occur are called
The
_________.
Answer:
seperate
template
origin
During replication, the two DNA strands separates and each chain serves as a template for a new nucleotide chain. The sites where DNA replication and separation occur are called the origin.
What is DNA replication?DNA replication defines the biological process of making two identical copies of DNA from a single original DNA molecule. It occurs in all living organisms which acts as the most essential part for biological heritage.
During DNA replication, each of the two strands forming the double helix serves as a template from which the new strand is copied, while these new strands will be complementary to the parental or "old" strand. Each new double strand consists of a parent strand and a new daughter strand.
Steps involved in the DNA replication are:
1. Initiation
2. Elongation
3. Termination
Thus, during replication, the two DNA strands separates and each chain serves as a template for a new nucleotide chain. The sites where DNA replication and separation occur are called the origin.
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1. Which of the following does not affect population?
O taxes
O immigration
O birthrate
Odeath rate
Taxes.
Immigration is the process of leaving one place. So it can't be.
Birth Rate is essentially more births happening. That effects population. Same as deatb rate.
You notice a new, beautiful aquatic plant growing in a local lake. This species has not been seen in the lake before. After doing some research, you believe the plant is a water hyacinth. These plants are not native to the lake and tend to grow in large quantities on the surface of the water. The plants grow and form dense areas of plant material, which blocks sunlight from passing through the plants.
Predict the effects of the introduced species on the community structure of the lake ecosystem.
Answer:
Sample Response: The structure of the lake ecosystem will likely become less diverse due to the introduction of the water hyacinth. Because the plants do not have any natural predators, they will grow in large quantities. These dense areas of growth will outcompete water plants that grow underneath the surface, causing them to die. Light would be blocked from reaching plants underneath the water hyacinth, decreasing native plants and algae below the surface. This could also have negative effects on the herbivores that feed on the native water plants, as they will not have as much food.
Explanation:
what app do you use for math?
please help me with these questions fast!
Answer:
All answers are in the images
How were the molecules moving in the morning explain why the molecules were moving that way after energy was transferred out of them?
Explanation:
Explain why the molecules were moving that way after energy was transferred out of them. The molecules were moving away from each other in the morning. The substance did not change phase because the energy did not overcome the attraction level of the gas in the tank.
Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen
to oxygen? *
Carbohydrate
Protein
Nucleic Acid
Steroid
Answer:
carbohydrates
Explanation:
Organic molecules composed of carbon, hydrogen, and oxygen in a ratio of 2-hydrogen atoms to every 1 oxygen atom.
A Chinook salmon fish in Alaska can produce up to 17,000 eggs in a single birth. Not all of these offspring can survive, however, due to predation and competition for limited resources, and the population of fish will evolve over time. Which process does this represent? A-adaptation, B-nutural selection or C- mutation
Answer:
Natural selection
What is the main cause of hereditary disease?
Answer:
Inherited disorders are caused by gene mutation. These include sickle cell anemia, hemophilia, color blindness.
Explanation:
How can we use patterns on the periodic table to predict an element’s structure and reactivity?
Answer:
The atomic number of an element which gives it valency.
From the valency, we get the ionic charge.
The greater the ionic charge, the greater the reactivity.
What is the importance of Mendel's conclusion?
Mendel concluded that traits can be divided into overt and latent traits. He named these dominant and recessive traits respectively. Dominant traits are traits that are inherited unchanged by hybridization.
Mendel developed his three principles of heredity to explain the transmission of hereditary traits before anyone knew that genes existed. Mendel's laws of inheritance greatly expanded our understanding of heredity and led to the development of new experimental methods.
Mendel's conclusion:
Genetic determinants are unique in nature. These determinants are called genes. Each parent has a pair of genes in each cell for each trait tested. F1 from a cross between two pure strains contains one allele with a dominant phenotype and one allele with a recessive phenotype.
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What is the form of reproductive isolation in which two or more species reproduces at different times?
Answer:
Explanati
Temporal isolation
Temporal isolation happens when two or more species reproduce at different times.on: