Answer:
Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).
Answer:
Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient.
Answer:
predation
Explanation:
predation
I hop this answer is correct
The energy goes up beacsue warmer air goes up while cold air goes down. This is called convetion.
