Answer:
Due to no resistance.
Explanation:
Most mosquitoes perish when DDT chemical was sprayed the first time because these mosquitoes are vulnerable to the DDT chemical and there is no resistance present in their body against this chemical. DDT chemical is an insecticide which is used against insects or pests that causes damage to human, organisms and crops. DDT was first synthesized in 1874 by the Austrian chemist named Othmar Zeidler.
Answer:lol
Explanation:adios master te me cuidas crack
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A. They trap some of the Sun’s heat energy within the atmosphere, helping to maintain Earth’s average temperature.
<span>Because i wake up early in the morning and my room is fairly dark. So there was night and view of my room is dark black. My red shirt is looking dark gray because there is dark black color in my room so red color absorbs black color so it looks dark gray to my eyes.</span>
Answer:
Pyramids of number show the number of <u>organisms</u> in each <u>trophic</u> level but pyramid of <u>biomass</u> show their total mass. This gets less at each trophic level because every living thing loses most of the <u>energy</u> they take in. Some is lost as heat during <u>respiration</u> and some is lost in the waste <u>products</u> living things excrete. Their consumers can only get the energy left in their <u>tissues</u>.