They need energy to produce oxygen
Answer:
c. the gravitational forces due to the sun and the moon cancel each other's effect
Explanation:
The two diagrams represent Neap tides. Neap tides occur when the Sun, the Moon and the Earth are aligned at right angles. Moderate tides are formed because the bulge due to gravitational pull of the Sun cancels the bulge due to moon. The difference between the high tides and the low tides is the smallest.
Alpha helices and Beta pleated sheets make up the secondary structure of protein.
In plants, the chloroplast is necessary to photosynthesis, and mitochondria contain enzymes responsible for producing energy
