"A" I think... Sorry if its not right...
Answer:
stethoscope is the instrument used to measure heart beat
Answer:
Almost twice
Explanation:
Human being have estimate 24,000 genes, while fruit flies have an estimate of 14,000 genes: meaning it is almost twice
Answer:
A or/and D
Explanation:
Environmental science is the study of how organisms interact with their environment so it can be either a or d. I would say a combination of both.
