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zysi [14]
1 year ago
10

How long ago was the Cambrian time period in the geological time scale?

Biology
1 answer:
zvonat [6]1 year ago
4 0

The answer is about 540-490 million years ago.

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All embryos appear female during early development. <br> a. True<br> b. False
guapka [62]

Answer:

True

Explanation:

Geneticists have discovered that all human embryos start life as females. In the early development in the embryonic stage, this is true both for humans and mammals. This changes only at the 2nd month (in the case of humans, since different mammals have different gestating periods) if the embryo can elaborate enough androgens (dominant male hormone) to offset the maternal estrogens (dominant female hormone) then, maleness develops.

8 0
3 years ago
What do we call an individual that has inherited two identical alleles for the same trait?
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An organism in which two copies of the gene are identical and are the same allele is called homozygous
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A __________ is a set of parts that function together as a whole. A) biosphere B) climate zone C) system D) habitat
klio [65]

C) a system is a set of parts that function together as a whole

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What is needed for work to be done?
Andrews [41]

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the third option

Explanation:

8 0
3 years ago
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Q3.13. In our simulation of herbivores feeding in a farm pasture, we treated each species as if it were foraging all by itself.
lilavasa [31]

Answer:

<em>The grasshopper competes with the sheep for food, thereby reducing the available quantity and quality of food for the sheep.</em>

Explanation:

In an ecosystem, many organisms rely on the same food source. The success of a particular species in extracting the food source better than another species that needs that same food source can affect the success of  population of this other species of animal. If the number of grasshopper in this pasture becomes too much, it might lead to the consumption of a large portion of the pasture by the grasshopper, leading to a reduction in the available food for the sheep. If this happens, the population of the sheep might decline in order to balance the increase in the population of the grasshopper.

5 0
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