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Alex Ar [27]
3 years ago
10

Burning of fossil fuels has changed the atmosphere by

Biology
2 answers:
Ad libitum [116K]3 years ago
6 0
I guess it is increasing concentration of carbon
producing a hole on ozone is because of the Freon in air conditioners and i guess all the others are wrong <span />
vagabundo [1.1K]3 years ago
6 0
C) increasing the concentration of carbon dioxide.
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If adenine didn’t always pair with thymine and guanine didn’t always pair with cytosine, the new DNA ladders wouldn’t always be
zloy xaker [14]

Answer:

they wouldnt be identical because for example Guanine could be paired with thymine in the original DNA strand but could decide to pair with adenine in the replication DNA. that would make a different type of DNA.

Explanation:

DNA replication is a beautiful process. In DNA replication adenine only pairs with thymine and guanine only pairs with cytosine. this ensures that a replication of the DNA will be the same type of DNA.

Replication works like this. Helicase splits open the DNA and each side is copied by DNA polymerase. If let's say the nucleotide bases for side 1 are ATGCGA then the DNA polymerase will pair these with the matching bases TACGCT which will make the same DNA but if each base could pair with any base they want that could create a few different variations of the original DNA. ATGCGA could very well be paired with TCGACA or CGACTA which would created two different types of DNA.

3 0
3 years ago
What are the three functions if cnidarians gastrovascular cavity?​
r-ruslan [8.4K]

Answer:

Digestion, distribution of nutrients throughout the body, and it can serve as a hydrostatic skeleton.

4 0
2 years ago
How does our hearing decrease?
kow [346]

Tiny hair cells inside your inner ear help you hear. They pick up sound waves and change them into the nerve signals that the brain interprets as sound. Hearing loss occurs when the tiny hair cells are damaged or die. The hair cells DO NOT regrow, so most hearing loss caused by hair cell damage is permanent.

3 0
3 years ago
Read 2 more answers
I need help with all the unanswered ones ASAP!!! Thank you so much!!!
Kaylis [27]
24.) C - a change in DNA coding can lead to a change in the protein that is produced, which changes structure, and therefore, function. 
28.) C - recombinant DNA is artificial, and the other examples can occur naturally 
29.) B - if DNA enters and successfully is produced within a plant cell, but is not originally from the plant cell, then the cell has been transformed. 
6 0
3 years ago
If red flowers are dominant to white, what is the mode of inheritance?
Olin [163]
Incomplete dominance means when the<span> gene </span>is<span> heterozygous it will neither have </span>dominant<span> or recessive trait.i</span>f<span> you cross </span>white flower<span> with </span>red flower<span> you will get a pink </span>flower<span>.this example shows incomplete dominance hope it helps
:)</span>
4 0
3 years ago
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