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Dahasolnce [82]
3 years ago
13

What is believed to have caused people to first move out of Africa? Where did they go?

Biology
1 answer:
Free_Kalibri [48]3 years ago
3 0
Biological or genetic changes caused migration

They went to Eurasian landscapes
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What was the benefit of crop rotation?
dybincka [34]

Answer:

<em>B. Different crops could be grown on the same land. </em>

Explanation:

Crop rotation is the process of growing different plants in the same land according to the season. Various kinds of plants require various sorts of supplements from the soil.

Changing crops on a regular basis enables the land to stay rich in nutrients, since not the majority of similar nutrients are being utilized each season. Crop rotation likewise fights against the powers of soil erosion. It also helps to improve the stability of the soil by shifting back and forth between harvests with profound roots and those with shallow roots.

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Which of the structures is surrounded by the connective tissue sheath known as the perimysium?
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Answer: Muscle fibers in bundles or fascicles.

Explanation:

Skeletal striated muscle is involved in dense unshaped connective tissue, the Epimysium. From the epimysium depart fine septa of connective tissue to the muscle, separating the bundles and constituting the perimysium, carrying blood vessels and lymphatics and nerves. Every muscle cell is involved in the basal lamina, reticular fibers and a small amount of connective tissue, which form the endomysium. It anchors muscle fibers between them and contains blood capillaries and axons.

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If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. Why is nitrogen important to
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D proteins and enzymes
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In a soil food web is Bacteria and Fungi, dead and decaying organic matter and plants the producers???
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Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.

Explanation:

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What would happen to zygote if the egg and sprem cells weren't formed with the correct number of chromosomes?
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A zygote can end up with one fewer chromosome than normal because one of the fertilizing gametes was missing a chromosome. This deletion, called nondisjunction, happened while the gamete was forming.

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