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GenaCL600 [577]
3 years ago
6

All are negative human impacts on the ecosystem except.... *

Biology
1 answer:
Gekata [30.6K]3 years ago
3 0
C.Afforestation
Answer
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How does a mask protect us?
nata0808 [166]

Answer:

Masks are a simple barrier to help prevent your respiratory droplets from reaching others. Studies show that masks reduce the spray of droplets when worn over the nose and mouth.

Explanation:

5 0
2 years ago
After incubation, you observe that your streak-plate has heavy, uniform growth but no isolated colonies. Which of the following
Vadim26 [7]

Answer:

Option 3 and 4 are most likely correct

Explanation:

<em>Option 3</em>: We know that area 1 would contain heavy streaking and not single colonies. Therefore, if the loop crosses area 3 and enters area 1, it will definitely result in heavy streaking again.

<em>Option 4</em>: We always need to sterilize properly the loop when streaking in different areas. If we don't do it, it is possible that the loop contains a lot of bacteria that would be streaked again.

Options 1 and 2 are incorrect because, according to question, there is a uniform growth but no isolated colonies. So, contamination or mixed culture would not produce uniform growth streaking rather mixed with other bacterial types.

3 0
3 years ago
). How many total electrons does a neutrally charged carbon atom contain in its orbits? How many electrons are in its innermost
scZoUnD [109]

Answer:

6 electrons

2 electrons

8 electrons

3 0
3 years ago
Which hormones are involved in building and maintaining healthy bone tissue? select all that apply?
gavmur [86]
Answer;
Insulin and the growth hormone
The hormones that are involved in building and maintaining healthy bone tissues are Insulin and growth hormone


Explanation;
Insulin has some anabolic properties for bone. It is uncertain whether insulin stimulates bone directly or indirectly by increasing muscle work and thus skeletal loading. 
Growth hormone is a peptide hormone secreted from the pituitary gland under the control of hypothalamus. It directly and through IGF-I stimulates osteoblast proliferation and activity, promoting bone formation. Additionally it stimulates osteoclast differentiation and activity,promoting bone resorption. 
8 0
3 years ago
A plate moving at a rate of 4 cm/year is moving toward a plate that is 10,000 km away. In how many years will the plates collide
VikaD [51]

Answer:

250 million years

Explanation:

I did the test

5 0
3 years ago
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