It is A, sunlight. The variable is the type of light used, and the control is used to measure the effects of the variables, so since sunlight is the normal light, it is the control.
The application of one chemical for a long time causes the pest to build resistance against that chemical.
The regular application of DDT chemical and not changing the pesticide build resistance in the population of boll weevils because regular application of one pesticides creates resistance in the insects or pest which causes in the decrease of its effectiveness against the pest or insect. The farmers should apply DDT at one season or year whereas the other chemical in the second season or year in order to avoid the production of resistance in them.
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Interphase is the phase of the cell cycle in which a typical cell spends most of its life. In interphase, the cell gets itself ready for mitosis or meiosis.
Fill in 'B' is 23 and number 2 is C
Answer:
over- irrigation
Explanation:
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