The answer is to your question is A
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
Diffusion is the type of transport that oxygen and carbon dioxide use to cross the cell membrane
Abiotic factors include sunlight, temperature, moisture, wind or water currents, soil type, and nutrient availability. Ocean ecosystems are impacted by abiotic factors in ways that may be different from terrestrial ecosystems.
They probably will be abiotic because they’re non living. If my answer was wrong, kindly remove my comment. Thanks
