A reaction in which heat energy<span> is absorbed is said to be endothermic. You </span>can<span> show this on simple </span>energy <span>diagrams. For an exothermic change: Notice that in an exothermic change, the </span>products<span> have a </span>lower energy than<span> the </span>reactants<span>.</span>
<h2>It contains toxins</h2><h2>It killed off bird populations.</h2><h2>It caused harm to human populations.</h2>
Explanation:
Let us understand the term DDT
DDT : Dichlorodiphenyltrichloroethane
- This is a crystalline chemical compound
- Basically used for protecting insects eating crops
- It is colorless, odorless, tasteless
- Initially used as pesticides
It killed off bird populations: Though it does not kill birds directly by consuming, it has indirectly damaged the egg by making the egg's shell too thin which gets broken easily.
It controlled diseases like malaria: Since this option talks about positive attribute of DDT, this option stands invalid. This chemical compound controls mosquitoes attacking the crop.
It caused harm to human populations: DDT causes vomiting, tremors or shakiness, and seizures
It contained toxins: It contains moderate toxins.
I would say D because it involves more selection but if that one is wrong it is most likely B. But I would go with D
Koalas, scientifically known as <em>Phascolarctos cinereus</em>. They found in the variety of habitats such as coastal islands and eucalyptus forest. They live in societies and rely on genetic diversity for survival like any other species. But in case of Koalas, the genetic diversity low over 120 years. Low diversity indicates that they practice inbreeding for reproduction. As a result the population size decreases.
Answer:
is the Correct Answer
Explanation:
<em>Natural science a branch of science that can be defined as a branch of science that studies nature in order to make predictions on its future occurrences.</em>
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