3. how are excretion and homeostasis connected?
o a. cells are able to maintain homeostasis by excreting materials.
o b. cells are able to maintain excretion through homeostasis,
o c. when cells excrete materials, they remove them from the cell.
o d. excretion and homeostasis are not similar.

A. Cells are able to maintain homeostasis by excreting materials.

Explanation:

Homeostasis is the ability to maintain stability of our body by the removal of waste products from the body by the process of excretion. Homeostasis maintains blood pressure, blood glucose level,levels of electrolytes such as Na+,K+ etc.

Excretion is the removal of byproducts ,excess of water and salts such as sodium,potassium,uric acid, etc from our body. If excretion doesn't takes place these materials will retain in the body itself  it may cause disturbance in homeostasis.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.