Answer:
8,000.
Explanation:
Nearly 90% are frogs.
Which structure separates an animal cell from its surrounding environment? (1 point) 1 Golgi apparatus 2 plasma membrane 3 nuclear membrane 4 central vacuole
Answer:
2) plasma membrane
Explanation:
The structure that separates the cell from its surrounding is plasma membrane, the correct option is 2.
What is plasma membrane?The plasma membrane, also renowned as the cell membrane, is the membrane located outside all cells that distinguishes the cell's interior from its surroundings.
A cell wall is attached to the plasma membrane on the outer of the plasma membrane of bacterial and plant cells.
The semi-fluid living matter in the cell is called protoplasm or in other words simply plasm. This living matter, or one can say plasm, is contained within the plasma membrane, a biological membrane.
Lipids which are phospholipids and cholesterol, proteins, and carbohydrate groups attached to some of the lipids as well as proteins are the primary components of the plasma membrane.
A phospholipid is a sort of lipid that is created by glycerol, two fatty acid tails, and a phosphate-linked head group.
Thus, the correct option is 2.
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What particles can move through the dialysis
tubing, do you think?
Answer:
Glucose, starch and iodine (potassium iodide) will pass through the membrane of the dialysis tubing.
If a recessive trait is expressed in an organism’s phenotype, what can you determine about its genotype?
a. Both alleles in the genotype are recessive.
b. At least one allele in the genotype is recessive.
c. You cannot determine anything about the organism’s genotype.
d. Both alleles in the genotype are dominant.
When a pelican gets hot, it opens its bill and flutters the sides of its pouch. This causes water to evaporate, which cools the pelican. What type of adaptation is the movement of the pelican’s pouch?
behavioral adaptation
life-cycle adaptation
physical adaptation
reproductive adaptation
Answer:
Behavioral adaptation
Explanation:
life-cycle adaptation would be like a tadpole growing legs.
physical adaptation would be a change in the animals body like wings for a bat.
reproductive would be beneficial for making offspring like a peacocks bright feathers that attract mates.
Behavioral adaptations are responses to external stimulus like heat.
So behavioral is the best option.
The role of a pioneer species in primary succession is to change a bare habitat into Abe that is suitable for other organisms. A species that is responsible for primary succession in an ecosystem is most likely able to-
A.)live at high altitudes
B.)migrate during the winter
C.)survive any predator
D.)carry out photosynthesis
can some one plz help me on this question its hard :( ill give brainliest
What does it mean when there’s an increase of white blood cells in the body?
A) Nothing, the amount always varies
B) There is no oxygen in the body
C) Your body just finished fighting an infection
D) There is an infection in the body
Answer:
D
Explanation:
White Blood Cells Increase When Someone is Fighting an Infection or Sickness
The energy that powers photosynthesis comes from
A. oxygen.
B. water.
C. the sun.
D. chemicals.
Answer:
sun but am not so sure about it
What is science, what is your own definition of science to you.
Answer:
The way that the Universe works, the way that different things in life contribute to one another.
Explanation:
Dang, that got deep real quick
science can be defined as all about the nature.
Someone plz help me! ☺️
how does a competition between animals help create a healthy forest?
Answer:
Making modifications to increase their chances of survival and reproduction.
Explanation:
hope this helps:)
pasteurization is not required for which type of egg or egg product
Answer:
whole eggs
Explanation:
i think its whole eggs but there is a guideline that says all egg products must be pasteurized
can you please answer these questions for me I really need help I am begging you
Answer:
1: 75%
2: 75%
3: 50%
4: 25%
Texto donde se desarrolle la definicion de seleccion natural. Además, empleem los siguientes terminos: Variabilidad, mecanismo selectivo y Darwin.
Answer:
la selección natural es el mecanismo principal por el cual la evolución ocurre
Explanation:
Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.
In rabbits, the gene for black fur is dominant over the gene for white fur. How can the appearance of white baby rabbits be explained when the mother has white fur, and the father has black fur?
Answer:
it is going to xx or xy those genes of the father and the father
Photosynthesis is a complex set of chemical reactions in which light energy is converted in to______________________ energy.
Answer:
chemical energy
Muscle cells need to quickly convert energy from molecules into a usable form. For this reason, which of the following do muscle cells have in greater number than other types of cell?
A. chromosomes
B. mitochondria
C. nuclei
D. vacuoles
Answer:
La respuesta D. vacuolas
Explanation:
What is the medicine called that helps kill bacteria?
Answer:
Antibiotics....................
can anyone answer 1&2 for me? :)
Answer: D A
Explanation:
You need to read and go by each one
PLEASE ANSWER
Essential Question: What causes the differences in average temperature and the changes
in day length that we associate with change in seasons on Earth?
Answer:
The evidence is valid because it represents how Earth's axial tilt impacts the temperature levels during each season. Conventionally, the Earth has an axial tilt of about 23.4 degrees, and revolves around the sun, ultimately causing seasons.
Explanation:
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Interactions that destabilize the system to have feedback
Answer:
A negative feedback loops is when glucose levels get too high, the body releases insulin into the bloodstream to get back to normal blood levels.
Please help.................
Answer:
C i think.......................................
If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O except If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O except ribulose bisphosphate (RuBP). O2. 3-phosphoglycerate. glucose. glyceraldehyde 3-phosphate (G3P).
Answer:
Option B, O2
Explanation:
It is because the oxygen released during the process of photosynthesis comes from the water absorbed by the roots and not by the CO2containing heavy oxygen (18O). In fact oxygen from CO2 containing heavy oxygen (18O) is used in making sugar which is then stored for energy.
Hence, option B is correct
true or false
A niche includes just the biotic parts of an environment.
Answer:
False
Explanation:
An organism's niche includes its environment, behaviors, and interactions. It also includes its role within the environment. The environment consists of living and nonliving components.
Which is an example of a scientific theory?
A. On average, larger mammals sleep longer than smaller mammals.
B. If a plant receives pure water, then it will grow more than one that
receives salt water.
C. Organisms evolve over time due to changes in heritable physical
characteristics.
D. If a person takes at least one vitamin per day, then it will reduce a
person's level of tiredness.
HELP PLEASE!
Answer: Organisms evolve over time due to changes in heritable physical characteristics.
Explanation:
There are a few things to look for when distinguishing between a nonscientific theory and a valid scientific theory. One thing to consider is if there are any published literature, experimental studies, and data available to support the theory. Most scientific theories have data and information tied to them. Another factor to examine is who has developed the theory. A scientific theory will always be supported by evidence with large quantities of data and testing. An example of a scientific theory is the theory of evolution, which observes changes in heritable physical traits over time in an organism. A hypothesis might be that all organisms evolve at the same rate.
Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
What is evolution?Evolution is the scientific theory that explains that "a change in the characteristics of biological populations over next generations.
According to scientists RNA is the first existing molecule on earth that replicate by itself and the process of evolution lead to advanced forms of life.
These characteristics are easily trasfered from one generation to other generation.
Therefore, Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution. Thus, option C is correct.
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1) Which of the following are scales of
ecosystems?
a. Micro
b. Macro
C. Messo
d. Ecotone
Answer:
Messo
Explanation:
The amount of gravitational force exerted on an object is its _______.
Answer:
mass
Explanation:
please mark this answer as brainliest
Answer: Hewo, there! your answer is below
Mass
Mass is a measure of how much matter an object contains.
Explanation:
Mass is a property that an object has no matter where it is located. Weight, on the other hand, depends on the force of gravity acting on that object.
Hope this helps you!!
Have a great day!!
What prevents a lake or ocean from freezing solid?
Answer:
The surface layer of the water freezes solid creating a barrier that insulates the ice below so that it keeps a steady temperature usually a few degrees above freezing (32 degrees).
Explanation:
Which best describes the effect on weather in an area if low clouds cover the sky during the daytime?
Answer:
Explanation:
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
The flooding of fields in winter can affect aquifers without having long term impacts on the height of the water table. Which statements explain why this is possible?
Select the TWO correct answers.
A. In winter, using groundwater to flood fields causes the water table to drop because water is withdrawn from the aquifer.
B. In winter, removing water from the aquifer causes the water table to rise because water covers the areas where rice is grown.
In spring, changes in the level of the river cause the water table to rise because water flows from the river into the aquifer.
C. In spring, removing water from the aquifer causes the water table to drop because water flows from the aquifer to the river.
D. In summer, changes in the level of the river cause the water table to rise because water flows from the river to the aquifer.
The flooding of fields in winter has no long-term effect on the height of the water table because removing water from the underground water - the aquifer causes water to drop and summer melts water into the water table.
Aquifers, Water Tables, Summer, and WinterDuring winter, the flooding of the field traps water from going back into the aquifers and the use of water from them causes the water level to drop.
Due to the melting of snow in summer, the water levels are normalized. Therefore, the correct answers are C and D.
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