Image result for In what era did the humans appear
Hominins first appear by around 6 million years ago, in the Miocene epoch, which ended about 5.3 million years ago. Our evolutionary path takes us through the Pliocene , the Pleistocene , and finally into the Holocene, starting about 12,000 years ago.
If a kite is flying in the air, does that mean that it is alive?
Answer:
No
Explanation:
If a kite is flying it means the air is enabling it to lift, the mechanism of a kite does not equate to a structure of a living thing
The part of the cerebral cortex that directs the muscle movements involved in speech is known as:_____.A) Wernicke's area.B) Broca's area.C) The temporal lobe.D) The parietal lobe.
Answer:
b) Broca's area
Explanation:
The part of the cerebral cortex that directs the muscle movements involved in speech is known as: broca's area.
Which of the following types of energy does the Earth receive from the Sun?
Answer:
Solar Energy
The sun radiates solar energy to the earth and it is used for other things.
Answer:
solar radiation
Which characteristic of a population is calculated by the number of organisms divided by the area they occupy?
A.
age structure
B.
density
C.
distribution
D.
genetic diversity
Answer:
B density
Explanation:
Answer:
its B
Explanation:
help asap pls getting timed
Answer:
temp.
Explanation:
Answer:
tempurature
Explanation:
Which best describes why projectiles move in a curved path?
Please help I will give BRAINLIEST face the earth
Answer:
It is often assumed that the moon is a perfect sphere, which it is not. The side of the moon facing earth is more dense than the side facing away. Therefore, it takes energy for the moon to rotate its earth-facing side away from the earth. Such energy is not currently available, so the same side always faces earth, caught in earth’s gravity.
Explanation:
Hope this helps you a lot my boo!
Answer:
The moon keeps the same face pointing towards the Earth because its rate of spin is tidally locked so that it is synchronized with its rate of revolution (the time needed to complete one orbit). In other words, the moon rotates exactly once every time it circles the Earth
During aerobic respiration, which of the following directly donates electrons to the electron
transport chain at the lowest energy level?
A. NADH
B. ATP
C. ADP + Pi
D. FADH2
E. None of the above
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Answer:none above
Explanation:
ok
What does yeast produce during fermentation ?
Answer:
Some yeasts can ferment sugars to alcohol and carbon dioxide in the absence of air but require oxygen for growth. They produce ethyl alcohol and carbon dioxide from simple sugars such as glucose and fructose.
Explanation:
Hope this helps (づ｡ ◕‿‿◕｡) づ
Luv ya
pls i’m getting timed
Answer:
smoke good luck buddy..
When a cell needs energy, it brings in nutrients and break it down and supply energy to the cell
Answer:
This question is incomplete, the complete question is: When a cell needs energy, I take in nutrients break them down, and supply energy to the cell. I can also convert stored energy in the cell to food. I am a?
The answer is MITOCHONDRION
Explanation:
All living organisms need energy at the cellular level to carry out their cellular activities. This energy is obtained by eating food. The energy in food is stored in the bonds of the sugar molecule that is contained in it.
However, via a process called CELLULAR RESPIRATION, the stored energy in food is broken down and used to synthesize a form of energy usable by the cell called ATP. This important process occurs in the organelle called MITOCHONDRION.
How does the process of hydration cause chemical weathering?
A.
Water reacts with iron minerals in rock to form rust.
B.
Moving water transports sediment from rock.
C.
Increased density adds pressure to the molecules in rock.
D.
Acidic water dissolves calcite in carbonate rocks.
Answer:
A. Water reacts with iron minerals in rock to form rust.
Explanation:
Generally, weathering is the process by which rocks are broken down or disintegrated into smaller particles. However, as the name implies, chemical weathering is the weathering facilitated by chemical reactions.
However, there are various types of chemical weathering, of which one is HYDRATION. Hydration is a type of chemical weathering which involves the reaction of water with the chemical constituents of rocks, which eventually disrupt or changes the structure. Therefore, in chemical weathering, water reacts with iron minerals in rock to form rust.
Are fibrous proteins heavier than globular proteins in terms of molecular weight? Why?
Answer:
Proteins range in molecular weight from 1000 to more than 1 million daltons (Da), but the folded size of a globular protein is not necessary correlated to its molecular weight. Proteins composed of about 250 amino acids or less often have a simple, compact globular shape. Larger globular proteins are usually made up of two or more recognizable and distinct structures, termed domains or modules. These are compact, folded protein structures that are usually stable by themselves in aqueous solution. Typical domain structures consist of hydrophobic cores with hydrophilic surfaces. Individual domains often possess unique functional behaviors and often perform unique functions within the larger protein in which they are found.
The purpose of the Darwin Finch lab was to establish that the relationship between food sources and beak shape was a taste preference.
a. True
b. False
Answer:
False. The purpose of the Darwin Finch lab was to establish that the relationship between food sources and beak shape was food availability.
Explanation:
Finches speciation was due to geographical isolation on islands and the differences in their picks were an evolutive adaptation that reflected feeding habits. Their speciation depended on or was the result of their adaptation to the island and its characteristics. The finches´ beaks evolved according to food availability. Large beaks are better for islands with larger seeds, while pointed beaks are better for getting insects out of trees.
A teacher modeled part of a DNA molecule using two of these coiled springs. Which part of the DNA was the teacher most likely modeling?
Answer: The part of DNA that the teacher was modelling would be the backbone of DNA.
Explanation:
The DNA is made of double helical structure which is twisted. In the structure of DNA two strands are coiled among each other.
The DNA consists of the nitrogenous bases, phosphate groups and deoxy-ribose sugar.
The backbone of DNA is made up of sugar( alternating )and phosphate group.The nitrogenous bases such as adenine, cytosine ,guanine and thymine are joined to the deoxy-ribose sugar.
This backbone part was part that the teacher was making as a model by using two coiled springs.
The distance versus time graph for Object A and Object B are shown.
A graph titles Distance vs Time. A straight slanting line is drawn through point 7 on y axis and this line is labeled Object A. The graph for Object B is a straight slanting line passing through the origin
What is the similarity between Object A and Object B?
Both have the same slope.
Both move with variable speed.
Both move with constant speed.
Both start the journey from the same point.
Answer:
The correct answer is - Both move with constant speed.
Explanation:
If an object moves in a particular way that it covers the same distance at the same times the speed considered as constant suppose if two objects a and b both travel 10 m and 20 m respectively and the time they take in travel are 2 and 4 seconds respectively than we can say they both have a constant speed.
The relation between the variables x,t, and v is
x=v.t
If V is constant which is the speed we get a straight line x-t in the graph.
By the given information we can say that both objects A and B are traveling at a constant speed.
Answer:
I think its C
Explanation:
I doing the test rn and im guessing
A bog is a type of wetland with witch of the following
a. stagnant water
c. warm, slow-moving water
b. only dead plants
d. still, acidic water
Answer:
Still acidic water
Explanation:
A bog or bogland is a wetland that accumulates peat, a deposit of dead plant material—often mosses, and in a majority of cases, sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; alkaline mires are called fens.
what are three ways transgenic organisms can be used to benefit society?
Answer:
1.To produce bacteria that can generate biofuels efficiently.
2.To produce bacteria that can generate medicines in large amounts .
3. To produce crops that are resistant to pests.
Answer:
To produce bacteria that can generate biofuels efficiently.
To produce bacteria that can generate medicines in large amounts .
To produce crops that are resistant to pests.
WILL GIVE BRAINLEST plz help mee
Why is wind an agent of mechanical weathering?
A.
Wind carries sediment that causes abrasion of exposed rock.
B.
Wind carries oxygen molecules that react with iron in exposed rock.
C.
Wind carries water vapor that dissolves minerals in exposed rock.
D.
all of the above
this is the answer
A.
Wind carries sediment that causes abrasion of exposed rock. this may be correct(:
Which best compares habitat and niche
Answer:
Habitat is like where the animal lives, and niche is its position in the community, like predator
10 POINTS !!!!
Which is an example of an environmental influence that would most likely result in natural selection?
O The soil in a field always has lots of nutrients, so corn plants in a population can grow quickly. O A fish is bom with a genetic mutation that produces a longer tail, allowing the fish to swim faster than others in the population
O A food resource disappears in a pond, and some frogs in a population can eat the remaining food resource, while others cannot O The temperature in a lake remains constant, so most of the turtle population survives to adulthood
Answer:
The best example of environmental influence that would most likely result in natural selection is that a food resource disappears in a pond, and some frogs in a population can eat the remaining food resource, while others cannot.
Explanation:
Among the environmental factors that can influence natural selection at a given time is the availability of food. Natural selection, from the point of view of evolution, is influenced by adverse environmental conditions, being food shortage one of them.
In conditions of food shortage in a pond, as in the example of the frog population, only the most apt will be able to take advantage of nutritional resources, while the less apt will not be able to survive. The ability to survive with little food available becomes an inherited trait that will be passed on to future generations.
In any case, tolerance to adverse conditions becomes adaptation, which translates into survival and reproductive success.
The other options are not correct because none of them show environmental pressure that can lead to natural selection.Answer:
food resource disappears in a pond, and some frogs in a population can eat the remaining food resource, while others cannot.
Explanation:
Sketch the process of endocytosis. Label the vesicle, cell, and cell membrane
Answer:
komakoji
Explanation:
structural adaptations of phloem
Answer:
strong
Explanation:
Answer:
The cells that make up the phloem are adapted to their function. Each sieve tube has a perforated end so its cytoplasm connects one cell to the next Companion cells. transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy.
Explanation:
How can natural selection result
in the adaptation of a population?
Answer: The traits of those who died before reproducing deemed "undisireable" (like a tale,scales,wings etc.) would have died out as they would not have had the opportunity to pass on these genes. Those of the same species who survived due to a lack of the "undisireable" trait would have the opportunity to reproduce and pass on the complete lack of the trait itself or a smaller version of the trait. This is what enables different species to adapt to live in different enviorments,you can observe this in different species that share a common ancestor.
Explanation: It's kind of in the answer
Are fibrous proteins heavier than globular proteins in terms of molecular weight? Why?
Answer:
Proteins range in molecular weight from 1000 to more than 1 million daltons
Explanation:
Which of the following statements about the tundra is not true?
a.
Tundra means “treeless land.”
b.
Plants and animals in the tundra have adapted to the extreme climate.
c.
Temperatures in the tundra range from extreme highs to extreme lows.
d.
The alpine tundra can be found on mountaintops.
Answer:
c. Temperatures in the tundra range from extreme highs to extreme lows.
Explanation:
all other statements are true
hope this helps, pls mark brainliest :D
Answer:
a. tundra means "treeless land"
Describe the basic process of DNA replication and how it relates to the transmission.
Answer: At the replication fork, the helix unwinds into 2 separate strands.
Explanation: DNA polymerase joins individual nucleotides to produce a new strand of DNA. This makes a brand new strand that is identical to the first. The DNA first replicates its information to ensure it is the same in the new strand.
Sandra was trying to water the flowers with the hose, but even with the water turned up to full force she could not get it to reach the farthest flowers. Her sister told her to cover part of the end of the hose mouth with her thumb. When she did this, the water shot out farther. Why did putting her thumb over the end of the hose make a difference?
A. The thinner stream of water could travel farther because it was lighter.
B. Sandra added more energy to the water by making it swirl inside the hose.
C. The same amount of energy in the water was forced through a smaller space.
D. The warmth of Sandra's thumb increased the amount of energy in the water.
Answer:
I think it's a sorry if its wrong
Answer
It's C, "Forced"
Explanation:
Does Evolution Exist?
Answer:
yes evolution do exist in nowadays also.