Chromosome is to cactus as gene is to needle.
Answer:
The answer is A.
Explanation:
Adaptive immunity recognizes antigens of viruses.
Answer:
hypothalamus
Explanation:
Hunger is partly controlled by a part of your brain called the hypothalamus, your blood sugar (glucose) level, how empty your stomach and intestines are, and certain hormone levels in your body. Fullness is a feeling of being satisfied.
