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Answer:</h2><h2>☠☠☠⭐⭐</h2>
The efficiency of movement of substances in and out of a cell is determined by its volume to surface area ratio.
One of the factors that affects the rate of weathering is exposure to the atmosphere. ... Another factor that affects the rate of weathering is the composition of rock. Rocks are composed of minerals, which are solid substances found within rocks that have their own distinct chemical composition.
Answer:
22. is a
23. is b
Explanation:
carbohydrates are made up of carbon, hydrogen, and oxygen
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Produce energy usable by the cells of their respective organisms.
