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elixir [45]
3 years ago
9

HELP ME!! 20 POINTS!! The main source of energy for our planet comes from the _______.

Biology
2 answers:
bonufazy [111]3 years ago
7 0

from the sun

we get light and heat

as well as we get vitamin D by the presence of solar radiation

Harlamova29_29 [7]3 years ago
6 0

it comes from the sun.

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Name some harmful substances found in cigarette smoke. How do these
katrin [286]
There are more than 7,000 harmful chemicals in tobacco smoke, at least 250 are known to be harmful. Some of these chemicals are:

Nicotine
Formaldehyde
Lead
Arsenic
Ammonia
Radioactive elements such as Polonium-210
Benzene

How some of those chemicals affect the body:

Nicotine is highly addictive and can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries (vessels that carry blood).

Symptoms for formaldehyde are watery eyes; burning sensations in the eyes, nose, and throat; coughing; wheezing; nausea; and skin irritation

High levels of lead may cause anemia, weakness, and kidney and brain damage. Very high lead exposure can cause death.

Arsenic poisoning occurs over a brief period of time, symptoms may include vomiting, abdominal pain, encephalopathy, and watery diarrhea that contains blood. Long-term exposure can result in thickening of the skin, darker skin, abdominal pain, diarrhea, heart disease, numbness, and cancer.

High concentrations of ammonia in air causes immediate burning of the eyes, nose, throat and respiratory tract and can result in blindness, lung damage or death.
4 0
2 years ago
Part E
telo118 [61]

Well-executed evacuations are key to minimizing loss of life from tsunamis, yet they also disrupt communities and business productivity in the process.

What is an evacuation?

Answer:- An evacuation shelter is built for longer-term usage; it offers catastrophe survivors who have been forced from their primary dwellings because of natural or man-made disasters a safe, sanitary, and secure environment as well as life-sustaining amenities. A building or earthen mound designed as a place of refuge in the event of a tsunami is known as a vertical evacuation tsunami evacuation building refuge. The shelter is built to withstand an earthquake and resist the effects of a tsunami and is intended for short-term (12–24 hour) protection. It is tall enough to lift refugees above the level of a tsunami inundation.

Therefore, Well-executed evacuation consider the elevation of the community.

To learn more about evacuation refer the given link:

brainly.com/question/21319056

#SPJ1

6 0
1 year ago
In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is
Agata [3.3K]

Answer:

The question is incomplete, it lacks the main questions, those questions are:

a. What is the genotype for black chickens?

b. What is the genotype for white chickens?

c. What is the genotype for erminette chickens?

Explanation:

This question involves a gene coding for feather colour in some birds, in which the black allele (B) and white allele (W) is involved. According to the question, the gene coding for feather colour exhibits co-dominance i.e. both the black (B) and white (W) allele are expressed in a heterozygous state (BW) to form an erminette phenotype.

Hence, if the neither alleles is dominant or recessive over the other. The black phenotype will only be expressed when the genotype is BB.

The white phenotype will only be expressed when the genotype is WW

The combination of both alleles which results in the simultaneous expression of both in the erminette phenotype, will be BW genotype.

8 0
3 years ago
Which of the following is the first principle of cell theory?
Oksanka [162]
The first part states that all organisms are made of cells.
4 0
3 years ago
What is the kinetic energy of a 1,200 kg object that is moving at a speed of 24 m/s​
Anit [1.1K]
The Kinetic energy is 345,600 J

=1/2^2

6 0
3 years ago
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