Which best describes the density of Earth's layers? O The crust is the most dense because it is the top layer.
O The mantle is the most dense because it is the thickest layer.
The outer core is the most dense because it is the only liquid layer.
O The inner core is the most dense because it is under the most pressure.

The chemical form of energy that is useable by the cell to do work

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a.achondroplasia b.huntington's disease c.hemophilia d.albinism

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?