4 Select the correct answer.

Andrew, a highly mechanized farmer, has large acres of farmland. He wants to apply pesticides and fertilizers to all his crops spread across his

large land. What should Andrew use to spray pesticides and fertilizers on his land?

OA. trucks

OB. airplanes

Ос. .

harvesters

OD. planters

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The correct answer is:

planters (D)

Explanation:

The key statement in the question is that Andrew wants to apply pesticides and fertilizers to all his crops across his large land. The most effective way of doing this is by using a planter to apply both the fertilizer and the pesticide as the planting occurs. This will ensure that the fertilizers and pesticides are applied directly to the crops and not scattered on the vast land.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.