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Genrish500 [490]
3 years ago
6

By how much did carbon dioxide levels increase from 1980 to 2000?

Biology
1 answer:
Wittaler [7]3 years ago
6 0
The answer is 32 ppm 

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g Classify the statements as describing deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). DNA RNA is a single molecule that
zmey [24]

Answer:

DNA:

- is a single molecule that can be over 10,000,000 nucleotides long

- is usually double stranded  

- includes the base thymine

- is the genome for prokaryotic organisms

RNA:

- can be translated into a protein  

- is usually single stranded  

- includes ribose sugar  

- is a single molecule that can form a complex secondary structure

Explanation:

Deoxyribonucleic acid (DNA) is the hereditary genetic material of both prokaryotic and eukaryotic organisms, while RNA is the genetic material of many viruses. DNA is a double helix molecule composed of four types of nucleotides: a nitrogenous base (Adenine, Thymine, Cytosine and Guanine), a five-carbon sugar (i.e., deoxyribose), and a phosphate group. On the other hand, RNA is usually a single-stranded molecule whose nucleotides contain ribose sugars and Uracil bases replace Thymine bases. During translation, a type of RNA molecule referred to as messenger RNA (mRNA) is used as template to direct the synthesis of a polypeptide chain (protein). This RNA molecule can fold to form stable double-stranded RNA hairpins (i.e., secondary structures).

5 0
3 years ago
This picture is illustrating
Mashutka [201]
I, seems to be the answer, because its not a sexual reproduction, (this occurs in cells, its not sexual reproduction, you would need the egg and sperm.
8 0
3 years ago
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Most animals are producers, meaning they are able to create their own food from inorganic sources.
skad [1K]
<span>This is false since plants are mostly producers and animals are mostly consumers. There is however a group of animals that are autotrophs and create their own food, but they are vastly outnumbered by consumers. The ones that produce their own are mostly within the family of funghi or similar things that border on whether they're animals or plants.</span>
6 0
4 years ago
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Which statement is true of the zero tolerance policy?
kodGreya [7K]

Answer:

d

Explanation:

8 0
3 years ago
How many chromosomes are there in human ovum​
denis-greek [22]

Answer:

23 chromosomes

Unlike all the other cells in a human body which are diploid, human sex cells are haploid. That means that both sperm cells and ova are haploid; containing only 23 chromosomes.

Explanation:

have a good day!

(─‿─)

7 0
3 years ago
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