Answer:
(a) Muscle B contracts and muscle A relaxes
(b) The Heart
Answer: u can say either Radiant energy or electromagnetic waves
Explanation:
Radiant energy is the energy of electromagnetic waves. These waves can travel through space.
Answer:
nonpolar fatty acid tails
The hydrophobic, or “water-fearing,” part of a phospholipid consists of its long, nonpolar fatty acid tails. The fatty acid tails can easily interact with other nonpolar molecules, but they interact poorly with water.
The vaccine was made in the past year, and the flu virus has mutated and grown resistant to this year's flu vaccine
