Which is an abiotic element found in a marine ecosystem?

a. Fish

b. Worms

c. Lizards

d. Water

In the six-kingdom system of classification, protists compose a single kingdom. Describe an alternate view of this classification.

A human head hair is best characterized by: a. The absence of a cortex. b. Its scale pattern. c. A medulla that is more than 1/2 the overall diameter of the hair shaft. d.

Is the second step in the scientific method

What defines a mixture? A. created through a chemical reaction B. described by a chemical formula C. cannot be broken down into simpler substances D. can be broken down into its basic substances through physical means

Which of the following happens to chromosomes during prophase? A They move to opposite sides of the cell. B They become centrioles. They condense. D They disappear.

Which molecule is a reactant in the first step and a final product in the fourth step of the Calvin-Benson cycle? A) RuBP B) ATP C) PGA D) CO2

Types of illness or diseases that are associated with your digestive system,

A client is admitted for treatment of chronic renal failure (crf). the nurse knows that this disorder increases the client's risk of:a client is admitted for treatment of chronic renal failure (crf).

How many electrons does carbon have available for chemical bonding? one two four

What is the main emphasis of the Human Genome Project? a. gene mapping c. gene therapy b. gene cloning d. genetically engineered drugs