What determines the texture of soil?

O

A. The amount of air and water in it

O

B. The amount of organic humus present

O

C. The amount of dark - versus light-colored rock

O

D. The relative amounts of sand, silt, and clay

If the moon were to suddenly disappear, which of the following would be a likely result? (Select all that apply) A. Fishing for sea life that lives on or near the shore would be more difficult. B. Surfers would have larger waves to surf. C.

Explain why carbon monoxide is or is not an atom

What is a biome? A: A living thing. B: A non-living thing. C: the range of physical and biological conditions in which an organism lives and the way it obtains what it needs to survive and reproduce.

An organism must be able to move to be considered a living thing A) True B) False

Compare Lamarck's Theory of acquired characteristics to Darwin's Theory of natural selection. What evidence supports natural selections?

Which diseases are caused by viral infection? Anthrax West Nile Measles Hepatitis A Chicken Pox Tetanus Rabies Bubonic Plague Influenza (flu) Hepatitis B Mononucleosis Gonorrhea Lyme Disease Cholera Whopping Cough Common Cold

Which of the following is not true regarding the formation of a dipeptide? A. a molecule of water is produced B. two amino acids are joined together C. a double bond forms between carbon and nitrogen D. a protein is formed

What are the two characteristics of autotrophs

Why is it necessary to do a spinal tap when you suspect a bacterial infection of the central nervous system? why can't you use a blood test?

Name the major greenhouse gasses and how they get into the atmosphere