Many years ago, the population of right whales decreased dramatically due to the large number of whaling ships hunting them. eventually, most countries outlawed the hunting of these and other whales and the number of whaling ships hunting them decreased. over time the population of the right whales increased again. in this situation the independent variable is the (4 points)
a. number of whales.
b. number of whaling ships.
c. years that have passed.
d. reproduction rate of the right whale.

11. animals and plants living on the rocky shores use all of the following special adaptations to live in these conditions except (4 points)
a. staying in cracks, under rocks or burrowing.
b. closing their valves tightly like barnacles and oysters.
c. camouflaging and appearing to be invisible by blending.
d. finding places that receive a lot of sun and air

17. which of the following is not a characteristic shared among all crustaceans?
a. exoskeletons
b. chelipeds or claws
c. swimmerets
d. mandibles

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

do yall know the answer?