Which layer of the earth is mostly made of iron and nickel?

Genetic diversity is required for natural selection to act, but natural selection can reduce or eliminate diversity. what forces restore or maintain diversity of a population?

An ungloved fist will do more damage to a jaw than a gloved fist. the reason for this is that the ungloved fist

Which of these is not an example of your body maintaining homeostasis?

Which of the following is an indacator of a chemical reaction

1. Rocks found in a river bed would typically be what type of rocks? Sedimentary Metamorphic Igneous Lava 2.

Which statement best describes the overall change that occurs as a result of mitosis?

When people plant vegetation they what? erosion

What is a polypeptide?

Sound cannot travel though a what?

Where do clams come from