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Olin [163]
3 years ago
5

The burning of fossil fuels is a direct cause of each of the following except

Biology
1 answer:
SIZIF [17.4K]3 years ago
7 0

Answer:

The ozone hole

Explanation:

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You have gone into the field to take water samples from
timofeeve [1]

Answer:

Lake A: pH = 4.5; Lake B: pH = 7.5

Explanation:

I think that one because if you look on the acid vs base chart acid is from 0-6 and bases are from 8-14 and acids are less toxic, so you would infer that lake A has acid and lake B has bases.

i would have picked the ones closest to 7 ,which is neutral, but I'm not sure that a base can be lower then 7 so I didn't pick answer C

7 0
3 years ago
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Which two species are likely to have the most similar dna base sequences?
saul85 [17]
Based on the attached Image;
The two species that are likely to have the most similar DNA base sequences are C and D. 
An evolutionary tree or a phylogenetic tree, like the one shown on the image is used to indicate which ancestors gave rise to which descendants. The tree represents the evolutionary relationships among a set of organisms or groups of organisms, called taxa. The tips of the tree represents groups of descendant taxa and the nodes represents the common ancestors of these descendants. 

5 0
3 years ago
What<br> is added to make RNA?
Anarel [89]
Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine (Figure 3). ... (Remember, DNA is almost always in a double-stranded helical form.)
5 0
3 years ago
DNA has two strands. If the sequence of nucleotides of one strand was known, is it possible to use that information to determine
erica [24]

Answer:

Yes , it is possible to make sequence of another nucleotide.

Explanation:

An adenine on one strand is always paired with a thymine on the other strand, and a guanine is always paired with a cytosine . If the sequence of nucleotides on one strand is known, the sequence of the other strand will be automatically known as well.

I hope this helps you

5 0
3 years ago
Which structure is unique to eukaryotic cells?
Mrrafil [7]

Answer:

Membrane-Bound Organelles

6 0
3 years ago
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