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arsen [322]
3 years ago
7

Air quality is important to maintain for the health of all animals and plants. True or false

Biology
2 answers:
Mariulka [41]3 years ago
6 0
True, any type of life need air
Alex Ar [27]3 years ago
5 0

Answer:

true

Explanation:

seems self explanatory

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<span>If I were attempting to date a rock sample that I suspect to be incredibly old, i would use radioactive isotopes with a long half life. When dating rocks and fossils to discover approximately how old they are, radioisotope dating is used on igneous rocks found near fossils. Things like Uranium 235, which is an unstable radioactive isotope of elements, decays at a constant rate over time so can be useful in determining age.</span>
4 0
3 years ago
What do scientists use to look at astronomical bodies?
love history [14]
D <span> microscopes  hope it helps </span>
7 0
3 years ago
The same sentences are written with a substitution, deletion, or insertion, much as a gene may have a substitution, deletion, or
strojnjashka [21]

Answer:

The question is incomplete, the complete question has been added as an attachment.

THE DGR AN represents deletion mutation

THE RED ANA TRA N represents insertion mutation

THE FOX WTS RED represents substitution mutation

Explanation:

Mutation is a change in the nucleotide sequence of a gene. It can be of different types depending on how it occurs. A deletion mutation is that which involves the removal of one or more nucleotide base from the sequence.

An insertion mutation is the addition of one or more nucleotide bases to the sequence.

A substitution mutation is the replacement of one or more nucleotide base in a sequence.

The original sentences were:

1. THE RED ANT RAN

2. THE FOX WAS RED

3. THE DOG RAN

The three sentences that mutated/changed are:

1. THE DGR AN- in this sentence, letter O which represents one base is missing due to removal, making the original sentence (THE DOG RAN) alterated. Hence, this represents an example of deletion mutation.

2. THE RED ANA TRA N - in this case, Letter A has been added in between N and T. This makes the original sentence (THE RED ANT RAN) altered. Since addition of letter (base) occurred, this represents an example of insertion mutation.

3. THE FOX WTS RED - In this case, letter A in "WAS" was replaced by T, making the original sentence (THE FOX WAS RED) altered. Since a replacement of letter (base) is the case here, it represents an example of substitution mutation.

8 0
3 years ago
Which country looks like it is experiencing exponential growth?
sergeinik [125]

Answer:

Chinese they have got high birthrate than death rate

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4 years ago
The _____ is a membrane within the uterus that permits the exchange of nutrients and waste products between the mother and her d
Irina-Kira [14]
Placenta

It also does not allow the maternal and fetal bloodstreams to mix
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3 years ago
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