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timama [110]
2 years ago
6

20 grams of ice will require how many calories to raise the temperature to 1 C

Biology
1 answer:
Vsevolod [243]2 years ago
3 0
I think the answer is 10 calories 
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What plant organelle performs photosynthesis
lyudmila [28]

Chloroplasts

In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules. I have taken the test before


7 0
2 years ago
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erma4kov [3.2K]
A and D are almost entirely solid solid
6 0
2 years ago
Byron’s car skidded across the rain-slicked road, into oncoming traffic. He was able to regain control and avoid an accident. As
andre [41]

Answer:

Parasympathetic nervous system

Explanation:

Parasympathetic nervous system (PNS) along with sympathetic nervous system (SNS) makes autonomic nervous system (ANS). ANS controls the functioning of internal processes like digestion rate, heart rate, respiratory rate etc. During a threat or stressful situation SNS is activated. It increases heart rate, respiratory rate and directs blood flow towards peripheral muscles as a part of "fight or flight response". When the situation becomes normal, PNS is activated which restores all the vitals as a part of "rest and digest" mechanism.

Since here Byron almost got into an accident, he was scared a lot due to which his SNS was activated. Eventually when he realized that he is out of danger, his PNS got activated which returned his heart rate and blood pressure to normal levels.

4 0
3 years ago
Elias conducted an experiment about the effects of exercise on the heart rate of teenagers. Before morning basketball practice,
padilas [110]

The <u><em>correct answer</em></u> is:

He needs to select a more representative sample.

Explanation:

Choosing students from the basketball team for the sample he uses on a study of heart rates and exercise will be a biased sample.  This is because students on the basketball team are potentially healthier than other students, which means that exercise will not have a large an effect on their heart rate as it would if they were not as healthy and not as physically fit.

In order to reduce the amount of bias, he should choose students from different groups throughout the school.

8 0
3 years ago
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Which describes an oxidation reaction that occurs during cellular respiration?
Yuri [45]

Answer: <u>Option 4; Oxygen gains electrons and hydrogen to form water. </u>

Respiration is a process where glucose is used and energy is released stored in this molecule. Oxygen is used during respiration as well and it gains the electrons and hydrogen to form water. And, gain of electrons is an oxidation reaction. So answer is option 4.

Since, oxygen is consumed during respiration, option 1 is incorrect.

Loss of electrons is reduction, so option 2 is also incorrect.

Glucose is used in respiration, thus option 3 is incorrect.

3 0
2 years ago
Read 2 more answers
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