Answer:
A device to measure the dimensions of a object
Explanation:
The answer could be either B or D. Both are important for marine biology. I would have to say D is the best answer though!
Answer:
complement is a system of plasma protiens that can be activated directly by pathogens
Answer:
there are four trophic levels first are producers then primary consumers then secondary consumers then teritary consumers
Explanation:
grass - grasshopper - frog - snake - eagle is a simple food chain
46 chromosomes, because they have the same amount of chromosomes as parent cells
