Almost all coal used today was produced during the Carboniferous period from dead animals in the swamps.

Biology

1 answer:

Ann [662]3 years ago

7 0

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.

You might be interested in

If a cell has a diploid number of 8 (2n = 8) before meiosis, how many chromosomes will be in each of the four daughter cells aft

Naddik [55]

Answer:

The final product is four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.

Explanation:

If nondisjunction occurs during meiosis 1, a pair of homologous chromosomes fail to separate, and one of the daughter cells will have the two chromosomes while the other cell will not get any chromosome from the pair.

If meiosis 1 occurs normally, but nondisjunction occurs in meiosis 2, sister chromatids fail to separate.

The usual process of meiosis produces four daughter haploid cells (n) from a diploid germ cell (2n). Each daughter cell is haploid because they have half the number of chromosomes of the original one.

If the diploid number of the original cell is 8 (2n=8), then under normal conditions, each haploid daughter cell should have 4 chromosomes (n = 4).

But in the exposed example, one pair of homologous chromosomes experiences nondisjunction during meiosis I (in the attached file, you will recognize this pair as the red one). The other chromosomes separate as usual. So one of the daughter cells will have one extra chromosome than expected (five instead of four), and the other daughter cell will lack one chromosome (three instead of four). Meiosis II occurs normally. The final result is the formation of four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.

6 0

2 years ago

Solar cells have many advantages. what is not one of these?

Artemon [7]

<span> electricity storage systems readily available. </span>

8 0

3 years ago

The action of a buffer to maintain ph within normal limits involves __________.

lozanna [386]

A buffer is a solution encompassing a weak acid and its conjugate base in alike amounts. This combination reduces the pH change upon addition of strong acid or base by converting H1+ (or OH1-) to weaker acids or bases. This primarily consist of compounds that stabilize the pH of a solution by removing or replacing hydrogen ions. Also, substances that resist change in pH.

3 0

3 years ago

Place the following in the correct order as they occur in CELL RESPIRATION.

Goryan [66]

Electrons and h+ ions pop off and are picked up by NADH.
1 C is stripped from 3-C PGA and makes Co2.
Coenzyme A attaches to 2-C molecule making Acetyl Co-A.
Resulting 3 C molecule is stabilized BEFORE entering the mitochondria.
Acetyl Co-A enters mitochondria and drops off 2-C molecules.
In cytosol, 6-C glucose and 2 ATP split into two 3-C molecules (glycolysis).
2-C molecule combines with 4-C molecule and breaks into two 3-C molecules
Krebs cycle spins twice; each time stripping 1 carbon to make Co2 as a by-product.
With each cycle of Krebs, electrons and H+ ions pop off, are picked up by NADH and FADH2 and taken to ETC
4 molecules of ATP are generated.

5 0

2 years ago

Negative feedback:If oxygen levels are low,then respiration should <br>A. Increase <br>B. Decrease

arsen [322]

Answer:

increase..................

8 0

2 years ago