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dolphi86 [110]
3 years ago
15

During which section of the geologic time scale did the first modern humans evolve?

Biology
1 answer:
ozzi3 years ago
3 0
Whelp, it is definitely not D. 
I would say B.
there was no Paleogene period.
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Cellular functions can be grouped into which three general categories?
Elena L [17]

Answer:

cell division

protein synthesis

growth and metabolism

Explanation:

idk if this is right I just looked it up

8 0
3 years ago
What type of nerve receptors are found in the fingers? Explain​
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Sensory nerve endings in the fingers include Meisnner's corpuscles, Pacinian corpuscles, free nerve endings, Merkel discs, and Ruffini endings.

6 0
2 years ago
The solutions in the two arms of a U-tube are separated by a membrane that is
IgorC [24]

Answer:

See the answer below

Explanation:

Recall that: <em>Water potential = pressure potential + solute potential</em>

Since the system is an open one;

<em>Water potential = solute potential = -iCRT</em>

i = number of particles the molecle will make in water (1)

C = molar concentration

R = Pressure constant = 0.0831 liter bar/mole K

T = temperature in kelvin = 22 + 273 = 295 K

To calculate water potential on side A:

C = 1 M

Water potential = - (1 x 1 x 0.0831 x 295) = -24.51 bars

For side B:

C = 2 M

Water potential = - (1 x 2 x 0.0831 x 295) = -49.03 bars

b.

<em>Since side A has higher water potential than side B, water will flow from side A to side B until equilibrium is established between the two sides. Water always flows from the region of higher water potential to the region of lower water potential.</em>

<em />

6 0
3 years ago
Why is it important for the chromosomes to condense during mitosis?
SSSSS [86.1K]

Answer:

To facilitate DNA replication

Explanation:

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4 0
3 years ago
Show instructions
diamong [38]

This question is incomplete because the images a section 2 are not given. I searched for the complete question but could not find it. However, based on my knowledge and the characteristics of the tundra this is the answer.

The correct answer is C. The climate is harsh, which limits the number of species that can live there.

Explanation

The tundra is the name of an ecosystem that occupies a fifth of the earth's surface, mainly in the northern hemisphere, this is characterized by having a frozen subsoil that limits the emergence and growth of natural vegetation and trees. This ecosystem is the coldest on the planet due to its location near the poles, its landscape is characterized by a layer of snow that covers most of the ground. In addition, the climatic conditions are extreme, which limits the number of plant and animal species that can live there. According to the above, the correct answer is C. The climate is harsh, which limits the number of species that can live there.

4 0
2 years ago
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