Answer: molecule
Explanation: common knowledge
Your answer would be D, because these are all relating to how the actions of the scientists will affect the environment and/or organisms.
Answers;
Do not plow when extremely heavy rains are expected
Plant trees to shield field from the wind
Keep plants growing.
Explanation;
Soil erosion is the wearing away of a field's top soil by the natural physical forces of water and wind or through forces associated with farming activities. Preventing top soil erosion is critical in agriculture; this is normally done using various measures such as Planting grass and shrubs, mulching, avoid soil compaction among other methods.
The disk diffusion test is used to compare the effectiveness of antibiotics. The incubated plate (results) will show bacteria growth except where antibiotic has effects. The more effective the drug, the inhibition zone will be greater. So the most effective antibiotic is the one that has the largest inhibition zone around the test site.
the answer is chemical reaction