Answer:
b. increased efficiency in walking as forests transformed to wooded environments; the ability to carry food in order to provision family members.
Explanation:
Peter Rodman and his colleague proposed a 'patchy forest hypothesis' according to which forests become more patchy and the food in them is in dispersed form so, the hominids their can move efficiently with energy and can carry food now with free hands.
While Owen Lovejoy suggested that monogamous males, provision their females and protect them from predators, females that are provided with foods, could now take care of more than one offspring at a time, and thus reduce the gap between births.
Rodman proposed that human evolution was driven by efficiencies in walking due to environmental changes while Lovejoy suggested it was due to the ability to carry food and provision for family members.
Peter Rodman and Owen Lovejoy were anthropologists who each contributed significant theories about the forces that drove human evolution. According to their theories, Peter Rodman proposed that human evolution was linked to the increased efficiency in walking as forests transformed into wooded environments. This transformation would have required our ancestors to travel further for resources, thus selecting for those who could walk more efficiently. On the other hand, Owen Lovejoy suggested the best explanation was the ability to carry food in order to provide for family members. In his view, the capacity to carry food would have promoted pair bonding and increased survival of offspring, propelling human evolution.
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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.
b. False
The given statement is False.
Corals reefs are affected by the pollution. When sediments and the other pollutants enter the water, they smoother the coral reefs and they damage the coral reef and increases the growth of the damaging algae.
Pollution make the corals more susceptible to disease and can also alter their rate of reproduction.
Answer:
C. This statement is true because every step in protein synthesis requires enzymes, which are nothing but proteins.
Explanation:
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