Your answer is B, cell wall.
The answer is B. When the deer did have food, it fueled their ability to move around but as the food supply went down, they did not have fuel, therefore explaining why they “moved more slowly”.
Bacteria released oxygen into the atmosphere
Answer:exposure to radiation
natural errors in cellular process
Subjection you’re Xrays
Explanation: if gametes aren’t being separated or divided you can of course have chromosome mutation. Also, exposure to certain chemicals, or radiations Will also cause chromosome mutations.
