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lbvjy [14]
3 years ago
14

Recent evidence from polar ice core analysis shows that, until now, carbon dioxide levels have never exceeded ________ ppm in th

e last several hundred thousand years.
Biology
1 answer:
kramer3 years ago
6 0

<span>Scientists have been doing several experimentation and discovery of the changes of the ice on the pole. Recent evidence from polar ice core analysis shows that, until now, carbon dioxide levels have never exceeded 300 ppm in the last several hundred thousand years.</span>

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What are stomata and how do they differ in monocots and dicots?
Naddika [18.5K]

Answer: Monocot and dicot plants contain stomata in their leaves as well as in their stem. ... The main difference between stomata of monocot and dicot plants is that the guard cells of the monocots are dumbbell-shaped whereas the guard cells of dicot plants are bean-shaped.

Explanation:

4 0
4 years ago
Which of the following has the element correctly matched with its description?
BlackZzzverrR [31]

Hello. This question is incomplete. It is important that you always provide all the information so that your question can be answered the way you deserve.

The full question is:

"Which of the following has the element correctly matched with its description?

The duodenum is the first section of the small intestine and contains Peyer's patches.

The bile moves upward and backward and pushes the bolus

The bones attaches the liver to the anterior abdominal wall

Tongue toxins prevent water absorption in the large intestine"

Answer:

The duodenum is the first section of the small intestine and contains Peyer's patches.

Explanation:

It is true that the duodenum is the first section of the small intestine where Peyer's patches are located. The duodenum is the place where most of the entire digestive process occurs, in addition, it allows food to mix with bile and digestive juices.

Peyer's patches play an important role in immunological surveillance during digestive processes. This is because it allows the destruction of possible pathogens associated with food, or that interfere with digestion in some way.

3 0
3 years ago
Can you pls help me??​
givi [52]

Answer:

photosynthesis

Explanation:

it's how plants produce energy

6 0
3 years ago
Read 2 more answers
Evidence of climate changes and conditions that affected early societies are gathered from _____. written records ice core sampl
pogonyaev
I go with Ice Core examples since early sociteties probably didn't have Written Records or maps, and tree rings would only tell if they were fossilized. I hope this helped :)
8 0
4 years ago
An individual homozygous dominant for the thumb shape mates with an individual homozygous recessive for thumb shape. What are th
natulia [17]

Answer:

A punnet square can be described as a diagram which is made to check the outcomes of a cross.

To check the probability of the offsprings of a cross between homozygous dominant thumb shape parent with a homozygous recessive thumb shape parent, let's draw a punnet square:  

        t              t

T    Tt            Tt

T    Tt            Tt

The results of the punnet square depict that:

Genotype: All of the offsprings will be heterozygous for the thumb shape trait. Tt will be the genotype.

Phenotype: All of the offsprings will show the thumb shape like the thumb shape of the dominant parent.

5 0
3 years ago
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