Because they have less resources to fight off disease and nothing to use for immunity. Sub Sahara Africa is also very poor
Answer:
barter trade
Explanation:
because you exchange goods
Answer:
All responses are correct
Explanation:
1- This process of chemical extraction produces release of toxins that are toxic to other life forms
2- Sponges are critical organisms in the nutrient cycles
3- Sponges provide habitat for other species (fish, crustaceans, etc)
4- Sponges have the ability to regenerate when they are separated into pieces
Answer:
Free ribosomes synthesize proteins that are released into the cytosol and used within the cell.