Answer:
B. All of these are drivers
Explanation:
The populations of lot of amphibians, with rare exceptions, are constantly on the decline around the world. The main reason behind this is the human activity, as it has caused lot of changes, pollution, and dangers for the amphibian populations, which has led lot of amphibians to be on the verge of extinction.
The pollution, especially of the waters, has been a major factor for the decline of the amphibian population. Lot of very toxic chemicals have made the water unsuitable for living and poisonous, which systematically killed off the amphibian populations.
The habitat loss, as with any other group of animals, has left the amphibians without places to live. They have been left without their shelters, food sources, mating grounds, and they have started to die out.
The invasive species, especially the predatory ones, have also had big negative impact. The amphibians didn't had any defense mechanism against the introduced predators, so they were easy prey and their numbers rapidly went down.
Answer:
D. New laws requiring younger children to go to school
Explanation:
Factories never had to pay children a fair wage because before the labor movements children were removed from the workforce entirely.
Both B and C have nothing to do with children so that can not be the answer
The only one that is left is D and that is the correct answer. New laws came into power during the first half of the 20th century and many highschools were built at that time.
The correct answer is: [C]: "central" .
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Answer: Hypothesis: <u>is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.</u>
Theory: <u>a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.</u>
Both: A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. A theory is always backed by evidence; a hypothesis is only a suggested possible outcome, and is testable and falsifiable. ...In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors. A theory is always backed by evidence; a hypothesis is only a suggested possible outcome, and is testable and falsifiable.
Word element writing or recording a method of recording
