Answer:
A, C, D and E are correct.
Whales did evolve from hoofed land-dwelling mammal ancestor, Pakicetus.
The nostrils moved from the front to the top of head to help them breathe while most of their body is submerged in water. As whales became aquatic, they used their tail more and more and the hind limbs became useless and vestigial. The skull became elongated over time because this design helped them be more aerodynamic in water and helped them evolve echolocation.
Explanation:
B. is incorrect because whales are mammals too.
F. is incorrect because their bones became more dense to help them stay submerged.
Answer:
D
Explanation:
collisions between molecules and atoms push on the container creating pressure
Answer:
Depending on the time she went an how long she stayed,
Explanation:
Answer;
A density-independent limiting factor
Explanation;
-A density-independent factor is any factor limiting the size of a population whose effect is not dependent on the number of individuals in the population.
-These factors can affect a population irrespective of its density. For example: natural disasters, temperature, sunlight, human activities, physical characteristics and behaviors of organisms affect any and all populations regardless of their densities.
A foreign object collided into Earth and a chunk fell off, forming the moon.
