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3 years ago

In the study of human evolution, scientists define modern in terms of:

Biology

1 answer:

Lina20 [59]3 years ago

6 0

Answer: a) a series of anatomical traits that distinguish Cro-magnon features from Neandertals.

Neanderthals (Homo neanderthalensis) were first discovered in Germany in 1856 and are believed to emerged between 100,000 and 200,000 years ago.

Significant differences found in the human and Neanderthal includes: 1) their DNA, 2) the brain of a Neanderthal had a raised larynx and was also bigger, and 3) Compared to modern humans, Neanderthals had bigger and muscular body but with shorter legs.

Cro-magnon is the earliest known Western European example of our species who lived 35,000 and 10,000 years ago. They are believed to be actually modern in every anatomical respect. They are much like us.

Neanderthal and Cro-magnon were believed to overlap in Europe for a thousand years but long-term interbreeding was not seen.

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Andrew [12]

Answer:

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3 years ago

A group of scientists is studying the internal parts of a cell.Which microscope is most appropriate for these scientists to use?

andrew-mc [135]

Answer:

an Electron Microscope

Explanation:

Electron microscopes have a higher magnification than the others, and therefore will allow you to see the insides of cells. Other types of microscopes will allow you to see the cell as a whole, but you won't be able to see most of the organelles as they are too tiny.

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3 years ago

A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of

Alisiya [41]

Answer:

density independent

Explanation:

In Ecology, a limiting factor refers to an environmental condition that hinders the growth and distribution of organisms in an ECOSYSTEM. A limiting factor hinders or hampers the productivity of an organism in its habitat.

There are two major types of limiting factors that affect organisms in their ecosystem viz: density dependent and density independent limiting factors. Density independent factor limits the size of a population independently of how dense the ecosystem's population is. This means that density independent factor affects a population irrespective of its size. Example of density independent factor are natural disasters e.g earthquake, hurricane, forest fire as mentioned in the question.

In this question, both populations of trees and birds are affected irrespective of the size of the ecosystem's population.

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3 years ago

Define deadwood in the context of these two sentences when populations are low , people use fallen tree limbs for fuel,which doe

muminat

Deadwood is woody debris in the forest that are no longer living including stems, shrubs, their partial remains, branches, twigs, but it exclude deadwood parts of living trees.

Explanation:

In simple words, deadwood is dead parts of trees in forests. Villagers use these dead fallen tree parts like branches, stems for fuel. When population is low, this need can be easily managed as their requirement is also less.

The speed at which trees become dead is slow and if does not match with the speed at which population grow then it won't serve their fuel purpose. So, when population grow, deadwood is not enough to serve their fuel purpose.

Deadwood is an play an important role in proper functioning of forest ecosystem.

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4 years ago

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Jlenok [28]

Answer:

growing pains maybe? if its really bad though you should go to the doctor

Explanation:

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3 years ago

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