The role of the excretory system is to rid the body of toxic waste products. Which of the following body systems also plays a direct role in removing waste products from the body?

A) endocrine

B) nervous

C) respiratory

D) skeletal

Which is the term for numbers that appear in the chemical formula of some compounds

How many cells make up a unicellular organism? one two three more than three

Every year the number of vehicles on the roads are increasing. these vehicles release many harmful gases into the atmosphere. what effects does this have on living things?

Clouds form when water vapor moves into the atmosphere. What drives this process? A) Rocks and minerals B) Solar Energy C) condensation D) convection currents

To emphasize that human beings are biocultural organisms means that a. human biology and culture both contribute to human behavior b. human biology makes culture possible and human culture makes human biological survival possible c.

What are restriction enzymes used for in nature?

Material with bits of rocks and once living parts of animals are

Think about a flower growing in your garden you notice that all of the leaves are falling off why is this a problem for the plant

How does polymerase chain reaction make DNA fingerprinting more reliable

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.