Describe 3 ways in which the organs of the circulatory system and respiratory system are protected

Which of the following statements about pesticides and herbicides is not true? a. They can enter waterways, polluting them. b. Once the pesticides and herbicides break down, they are no longer harmful. c.

Why photosynthesis is important?

Describe the changes that occur in kidney and bladder function in old age

Explain the role human body systems, tissues, and cells play in identity

Which question would be asked in a dichotomous key? A. How long are the insect's antennae? B. Are the insect's antennae longer than its head? C. Are the insect's antennae long or short? D. How does the insect use its antennae?

A large molecule consisting of many identical or similar monomers linked together by covalent bonds.

What is the significance of an eyespot in the cell of euglena

How does soil affect the potential hydrogen of water

4 importances of nitrogen to living things

Which of the following statements is true? (a) Extracellular signal molecules that are hydrophilic must bind to a cell-surface receptor so as to signal a target cell to change its behavior.