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Savatey [412]
3 years ago
12

Scientists at Russia’s Vostok Station in eastern Antarctica drilled the longest ice core ever recorded. They compiled this graph

using the data collected from the ice core. This plot shows the temperature, carbon dioxide (CO2), and dust levels up to 400,000 years ago. Which statement best summarizes the data in the graph?

Biology
2 answers:
Wittaler [7]3 years ago
4 0
The data supports the fourth choice, that increasing air temperature and CO2 levels correlate with a decrease in dust concentration.

The first choice is unlikely to reflect dust concentration, and is more likely to be for air temperature. The second choice is false, because the dust concentration is more of a decreasing trend. The third choice is not true, as the spikes in air temperature and atmospheric CO2 concentrations seem to occur simultaneously, implying a positive correlation.
ddd [48]3 years ago
4 0

Answer:

The answer is D.

Explanation:

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Total nucleic acids are extracted from a culture of yeast cells and are then mixed with resin beads to which the polynucleotide
mr Goodwill [35]

The question is incomplete as it does not have the options which are:

(a)DNA (b)tRNA (c)rRNA (d)mRNA

Answer:

Option-mRNA

Explanation:

The mRNA is synthesized from the DNA and which is also a type of nucleic acid. When the nucleic acid is extracted from the yeasts and then mixed with the resin beads to which the polynucleotide with thymine base oar is attached.

The mRNA will bind to the resin bead as the mRNA after synthesis undergoes modification and attaches poly A tail to the end of the mRNA at 3' end.

This poly-A tail has adenine which easily binds to the thymine and thus mRNA easily attaches to the resin bead.

Thus, mRNA is correct.

5 0
2 years ago
How does carbon enter the atmosphere? options: Burning fossil fuels Cellular respiration Both A and B Neither A nor B
marta [7]

Answer:

Both A and B

Explanation:

Burning fossil fuels produces carbon dioxide.

Cellular respiration produces carbon dioxide.

Both produce carbon dioxide.

Both A and B.

3 0
3 years ago
Which accurately describes gymnosperms? Check all that apply. Some of them lose their leaves in winter.Some of them lack seeds.S
AleksandrR [38]
I think that correct answers are:
<span>Some of them lose their leaves in winter. (i.e. <span><em>Larix</em></span>)</span>
<span>They include the tallest plants (i.e<em>.Sequoia)

</em>I don't think they are the oldest type of seed plants, since in the past the classes like progymnosperms and seed ferns existed prior to the gymnosperms. But question isn't absolutely clear to me and I can't be 100% sure.
All of the gymnosperms have seeds unless human grows some seedless variant.
Gymnosperms don't have flowers like angiosperms do, but some people think that cone is kind of flower.
Male cones produce pollen, not female.
Hope I helped :)
<em /></span>
7 0
3 years ago
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Tems11 [23]
B.

The radiation present is likely to cause genetic mutations. 
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3 years ago
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Mama L [17]

By manipulating the substrates of the reaction, the enzyme can lower the necessary energy needed to make the reaction occur.

5 0
2 years ago
Read 2 more answers
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