John Dalton believed that: Atoms are made of mostly empty space. Chemical changes are the result of different atomic combinations. Violent chemical reactions can divide atoms into smaller particles. All of the above.

Sources are called tertiary sources if they A. include excerpts from firsthand accounts but are not entirely firsthand accounts. B. are a collection of raw data instead of being one single piece of raw data. C.

In a plant where does the exchange of gasses enter and exit takes place?

What is the principle of natural selection

Questions 28. Which of the following is a non-living pathogen? a. stapholococcus b. hepatitis A c. igneous rock D. salmonella

How does exercise affect cellular respiration?

Most of the world's food supplies comes from 14 species of crops. Which of these crops are the most important? A) corn, potatoes, and hay B) wheat, rice, and sugarcane C) alfalfa, rice, and wheat D) grasses, bananas, and beans

Tryptophan is an amino acid necessary for E. coli survival and growth. E. coli contain genes coding for enzymes that synthesize tryptophan. These genes are grouped together on a segment of DNA called the tryptophan (trp) operon.

Why does it make sense that the sensors and controller of body temperature reside in the brain? A. Because the brain enables the body's response to temperature changes B. Because deep inside the brain is considered the body's core C.

List the four (4) major groups for the antidepressant medications and the prototype of each one. what are the major differences between the four (4) classes?

Which causes an increase in greenhouse gasses