Why arteries have thick and elastic muscular walls?

What are the three types of plate boundaries? What major surface event occurs at each?

Which of these is an environmental effect of burning fossil fuels

sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of + 1. Why? A) sodium loses a negative electron when forming chemical bonds. b) sodium gains a + proton when forming chemical bonds.

Which layer is believed to behave most like a liquid?

How is homeostasis and metabolism interrelated?

Specialized sex cells, such as eggs and sperm, are called: a. gametes c. gonads b. diploids d. chromosomes

Which of the following items is best observed under a compound light microscop. A.) an atom B.) a colony of ants C.) a single-called organism D.) an underground fungal system

Which animals form a eusocial society? A) ants B) cheetahs C) polar bears D) moose

In what kind of envionment would you expect to find organisms that carry out fermentation

The cell cycle of a eukaryotic cell describes the birth, growth, reproduction, and death of a cell. True False