They need to be able to sense incoming threats
Answer:
C is da answer
Explanation:
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When a population of birds that are separated into a different area, they might find a different kind of bird and mate with them. likely they might get killed because of their way of eating and surviving.
Answer: 15 mL
Explanation:
Volume = Mass ÷ Density
= 40.5 g ÷ 2.7 g/mL
= 15 mL
∴ the volume of the block of aluminum is 15 mL.
I'm pretty sure the answer is either diffusion or "respiration"