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s2008m [1.1K]
3 years ago
13

Why does a parcel of air expand as it rises upward through the atmosphere?

Biology
1 answer:
vichka [17]3 years ago
4 0
the atmospheric pressure decreases upwards, hence the inter-molecular attraction between the air molecules decreases or to say that the inter-molecular space increases and the parcel of air expands.
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Almost all coal used today was produced during the Carboniferous period from dead animals in the swamps.
Ann [662]

Answer:

False

Explanation:

Almost all coal that is used today has its origins in the Carboniferous period. The Carboniferous period was a warm and wet one, with the majority of the land being swampy and covered with dense rainforests of ancient tree species. By the end of this period, the climate quickly changed, resulting int he collapse of the rainforests. As the trees were dying out, they were falling in the swamps, quickly being covered by the mud, so remaining largely preserved. Over time they got exposed to higher pressure and temperatures as they were getting deeper into the crust, eventually resulting in the formation of the coal.

7 0
3 years ago
1. In a pedigree, a square represents a male. If it is darkened he has hemophilia; if clear, he had normal blood
coldgirl [10]

Answer:

a, 8

b, 3

Explanation:

If the pedigree you are referring to is the one that is attached then the answer would be:

A pedigree shows how a trait is passed on throughout generations. Like it says in the question, the squares represent males. If the square isn't shaded in, then that means they are unaffected by the trait or normal. If it is shaded, they are affected.

All you need to do for the first question is count the number of squares you see in the whole pedigree. In this case, there are 8.

The second one is asking how many are affected, or have hemophilia. You need to count the number of squares that are shaded in. In the pedigree, we see 3.

4 0
3 years ago
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