Which of the following is a unicellular organism?

A. Bacteria

B. Bird

C. Fish

D. Flower

the maintainnce of healthy bones depend on the balance of osteoblast and osteoclast activity, predict what would happen if osteoblast activity exceeds osteoclast activity?

Responses of the immune system to usually harmless environmental substances are known as (1) antigen production (2) chromosomal mutations (3) pathogens (4) allergies

Susan has the option of purchasing one of three products: Brand A, Brand B, or Brand C. Each costs twenty dollars. If she decides that Brand A meets her needs best, then the opportunity cost of this decision is A) Brand A B) forty dollars.

A research colleague has provided you with a single cell to identify. briefly describe the steps you would take to determine which domain this cell would most likely belong to.

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

What the different between interstitial fluid with blood.

In a controlled experiment a scientist is studying how long it takes a parachute of different sizes to fall to the ground what is the manipulated variable

Why do you bleed when you get cut?

Which factor most influenced beach erosion in a hurricane

Which of these describes a population? A. all the organisms that interact in a lake B. all the gray squirrels that live in a forest C. an area characterized by a group of plants and animals D. a nonliving factor in an organism's environment