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Arisa [49]
3 years ago
14

Can a catalyst be used over and over again?

Biology
1 answer:
Diano4ka-milaya [45]3 years ago
4 0
Yes they can because the catalyst does not take part in the chemical reaction and remains unchanged after the reaction has ended.  Biological catalysts are known to be recycled by the bodies in which they work.
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Overhunting of deer followed by a very difficult winter caused the deer population on an island to drop by 80%. In the next two
lubasha [3.4K]

Answer:

a trophic cascade

Explanation:

A trophic cascade -

It refers to the process where the addition or removal of any of the predators disturbs the food chain , is referred to as a trophic cascade .

As the reduction in one of the animal of the food cycle would lead to the increases in the number of his food , which would be the plant or the animal .

Hence , from the given scenario of the question ,

The correct answer is a trophic cascade .

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3 years ago
identify a probable reason that the dark moths survived while the light moths did not during the industrial revolution
nignag [31]

Answer:

directional selection

Explanation:

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Explain how living things can become trapped and fossilized in asphalt
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From the markings that you had written and erased on your graph, it seems that you already have an idea of what you're supposed to do. Is it that you're having trouble scaling your graph on the provided sheet given the particular data? Or do you have a conceptual question with respect to the instructions?

I've provided the image of the graph according to my understanding of the instructions as stated in 1 and 2, and I've also attached the corresponding Excel spreadsheet that I used to create the graph. While the blank grid that you've attached doesn't scale identically to my graph, it should be possible to transpose the necessary elements into your grid to an acceptable approximation.

That said, please feel free to let me know if you have any clarifications, comments, or questions.

Download xls
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> xls </span>
02d74d35f2af1b4ad8ec64372b0f2c38.png
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