The answer is B. Multiple food chains make up a food web of an ecosystem. A food web is made up of multiple food chains, and shows the relationships between different organisms in an ecosystem.
Because there is a shortage in food supply, many animals will starve and be forced to migrate.
Where you did not give any answer choices, I think it would help to mention that Calcium helps to strengthen bones. Calcium can be found in pretty much all milk products, as well as some non-milk products, such as things like cooked broccoli and almonds!
Answer:
B. The periplasmic space contains the peptidoglycan layer of Gram-negative bacteria.
Explanation:
Periplasma is the compartment that surrounds the cytoplasm in Gram negative bacteria. It is comprised between the plasma membrane (which is inward) and the outer membrane of the gram negative, on the outside.
This periplasmic space contains the peptidoglycan layer and proteins that are responsible for receiving extracellular signals, among other functions.
The high concentration of peptidoglycan causes this space to be in a gel-like state.
Without staining them you wouldn't be able to see them
