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UkoKoshka [18]
3 years ago
8

_____ mimic the brain's internal system for relaxation and well-being by producing endogenous opiates.

Biology
1 answer:
svetoff [14.1K]3 years ago
7 0
Narcotics mimic the brain’s internal system....
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Question 3
pickupchik [31]

Answer:

its Meiosis I

(cuz in meiosis I there is a reduction of the chromosome number from diploid (two separate copies of each chromosome) to haploid (one copy of each chromosome) during the formation of gametes.)

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2 years ago
The Sun is a significant factor that helps to support life. Which of the following Earth-Sun relationships is not true? The sun'
Usimov [2.4K]
<span> 4th planet from the Sun, which is a perfect distance to utilize the Sun's energy

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3 years ago
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Why are a plant's Stomata generally open during the day and closed at night?
marin [14]
When stomata are open, carbon dioxide enters the plant through stomata. Carbon dioxide is necessary for the process of photosynthesis in which it is converted together with water into oxygen and glucose. For most plants, it is necessary that stomata are opened during the day when there is a lot of Sunlight also necessary for the process of photosynthesis.

However, some plants from the arid locations have <span>stomata closed during the day, so they reduce water loss that way. In the night when is colder, stomata open and carbon dioxide enters through stomata. </span>
7 0
3 years ago
Identify the four postulates of natural selection. select all that apply.
Naddika [18.5K]
Here are the four postulates of natural selection, according to Charles Darwin:
1. variability - refers to different mutations that create different species
2. heritability - refers to the genes that are passed from one organism onto its descendants
3. overproduction of offspring - refers to the fact that more "children" is born than dies
4. natural selection - refers to those organisms that survive because they adapt to their surroundings better than those who will die
6 0
3 years ago
How many times a day does a specific location experience high tide?
DENIUS [597]
A specific location will experience high tide, and low tide twice per day.
4 0
3 years ago
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