a process of change in a population over time.
DO NE
Answer:
Fill in the blank below with the word that best completes the sentence.
Natural selection leads to Evolution, a process of change in a population over time.
after
Complete the sentence below by selecting the correct words from the drop-down menus.
Factors that affect natural selection include
✔ variation
,
✔ overpopulation
, and
✔ adaptation
.
Explanation:
Answer:
natural growth
Explanation:
because all thing's which are natural are natural resources.
Answer:
Arteries
Explanation:
There are three main types of blood vessels: veins, arteries, and capillaries. Arteries are the blood vessels that carry the oxygenated blood from the heart to various body parts. Veins pick the deoxygenated blood and deliver it to the heart to be oxygenated.
Arteries are the blood vessels with thick walls and no valves. Blood is pumped with higher pressure from the heart into arteries. The pulmonary artery is the only exception that carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
Arteries carry oxygen-rich blood in the body, supplying oxygen to the tissues.
Arteries carry oxygen-rich blood in the body. Specifically, in the systemic circuit, arteries provide oxygen-rich blood to the body's tissues. On the other hand, in the pulmonary circuit, arteries carry oxygen-poor blood to the lungs for gas exchange.
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b. less water would need to be excreted by the kidneys.
c. they don't have kidneys.
d. their cells would eventually swell.
The best answer is A.
Unlike marine animals such as fish, land vertebrates do not have mechanisms to excrete high salt content. Their excretory organs namely the kidneys are not designed to handle concentrated salt content.
Therefore if high salt content is retained in the body, then osmotic imbalance in cells of land vertebrates would occur with the cells losing water because they would be hypotonic to their immediate surrounding and eventually die.
Marine fish are able to maintain osmotic balance in the sea water because they have specialized cells in their gills that actively eliminate salt and these fishes do not absorb any salt from the water they drink.
i think its because they had a little competition from other land dwellers.
HOPE THIS HELPS!
^_^