Answer:
The blood brain barrier blocks chemicals from entering brain tissue.
Explanation:
Answer:
The main difference between stomata and lenticels is that stomata mainly occur in the lower epidermis of leaves, whereas lenticels occur in the periderm of the woody trunk or
Answer:
3rd One
Explanation:
1. Doesn't even talking about animals dying
2. Kills of all the fish in one small pond but not the whole species
3. Correct because every individual in a species has been killed
4. They just migrated not died