The 4 chambered heart is cheaper to maintain and manufacture.
Any forms of predatory or parasitic life may decrease, or even vanish! As then would the creatures that survived off of these organisms. I would be able to go on for a while about the different organisms of all sizes that would vanish and how they would cause other species to be affected.
Salmon are VERY important to the food chain!
Hope this helps! <span />
Answer:
javier: i cant do my homework, i have a terrible headache
Explanation:
ive already done it.........
4. Petroleum.
Hope this helps!
Endocytosis -into cell
exocytosis -out of cell
so they are different.
