Aluminum is an element. Which best describes what makes up a sample of aluminum?

one kind of atom

O two different kinds of atoms

all carbon-based atoms

a carbon atom and non-carbon atoms

What does watershed consist of?

Urea: a. is formed mainly in the hepatic cells of the liver. b. is derived primarily from amine groups during the catabolism of proteins. c. is passively reabsorbed by the kidney d.

1. A feature that is not the direct result of glaciation is a (n): meander drumlin moraine till 2. Sedimentation is least likely to occur: on a mountainside in a lake on a sandbar in a sand dune

4. What is the function of DNA?

Individuals with the sickle-cell anemia trait are more likely to survive a malarial infection and have increased reproductive success in malaria-prone areas. This is because individuals with sickle-cell anemia

Activation of the anterior cingulate cortex would be expected to

Particles in a warmer substance have a. average kinetic energy than particles in the substance when it is cooler

All bacteria are classified as A. Eukaryotes. B. Prokaryotes. C. Archaea. D. Protista.

All the systems of the body work together to keep the internal environment of the body constant within certain limits. this process is called a. homeopathy. b. homoeostasis. c. positive feedback. d. neuroglia.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a: