Classify and explain why each of the following is either a mixture or a compound: air, CO, and pure water.

When two atoms of different elements come in contact, heat is given off and light is produced. Which of the following does this support? A. The law of definite proportions B. The law of conservation of energy C. Dalton's atomic theory D.

When overdevelopment occurs and canals are built to divert rain water, the hydrological cycle can be disrupted. What is the most likely consequence of this disruption? A. Higher methane concentrations B. Higher water vapor concentrations C.

For the following organisms, choose the correct order of increasing trophic level. a. fungi, deer, wolf and grass b. fungi, grass, wolf and deer c. grass, deer, wolf and fungi d. grass, fungi, wolf and deer

Which of the following are not considered to be animal-like protist? zooflagellates dinoflagellates Amoebas Sporozoans

A heritable trait is one that A heritable trait is one that is determined at least in part by genes passed from parents to offspring. is dominant and hence is always inherited. is determined by genetic information encoded in proteins.

Why are elements and compounds classified as pure substances?

What is independent assortment?

Sulfur trioxide is a covalent compound. Which is the chemical formula for sulfur trioxide? A. SO3 B. (SO) 3 C. S3O D. S3O3

What is the polymer of lipids

Suppose you look at a microscope to look at a cell from leaf of a tree. What structure will you see that would not be found in a cell from you finger nail. A) cilia B) mitochondria C) ribosomes D) chloroplasts