There is something called the lock and key mechanism; it has a shape that fits the substrate like a lock fits a key only substrates with a particular molecular shape
Answer:
Answer optino C.
Explanation:
the hormone erythroprotein increases the production of red blood cells when oxygen levels are low best supports teh statement taht hormones are involved in the regulation of homesstasis.
The sun is the ultimate source
Answer:
That would be organism, species, and then community.
Explanation:
