3 years ago

Why Mike a scientist repeat any spearmint if he she didn’t make a mistake in the first one?

Biology

1 answer:

Assoli18 [71]3 years ago

8 0

Answer:

Explanation:

i think its so that there wont be any mistake in when they are collecting their data which simplifys to Experiments are often replicated or repeated even when no obvious mistake was visible

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b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t

saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

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3 years ago

We get wood from trees. Tree - wood - ________. What word BEST fills in the blank and describes what makes up wood? A) atoms B)

NeX [460]

B because it’s talking about the tree itself. Saying that it’s plants would divert it to a different plant. The cells of the wood is what makes the tree and is relevant to the question

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3 years ago

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If a container of solution contains 15% of salt, what percentage of water does it contain?

riadik2000 [5.3K]

Assuming it's only salt water, it should be 85%

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3 years ago

5. Do renewable energy sources have little or no impact, compared to non-renewable sources?

steposvetlana [31]

They have more little impact because they are renewable

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