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romanna [79]
2 years ago
14

How many stars are at the center of our solar system?

Biology
2 answers:
Dovator [93]2 years ago
8 0
200bill, probably way more
Zina [86]2 years ago
5 0

Answer:

1, the sun

Explanation:

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you discover a certain species of weed growing in soil contaminated with toxic pcbs, and later determine that the pcb resistance
hammer [34]

Answer:

f(R) = p = 0.1

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Download pdf
8 0
2 years ago
. One function of the circulatory system is to help maintain a uniform body temperature. Explain how the constant circulation of
Effectus [21]

Answer:

Capillaries are the blood vessels with the smallest diameter and those closest to the surface of the skin. The blood that circulates through them is therefore closer to the outside air than the blood in the rest of our blood vessels. As the capillary dilates, a greater amount of blood is exposed to the air, which allows it to cool down and our body temperature to be maintained.

Explanation:

Blood is a solution where solutes and cells are found and that participates in homeostatic mechanisms such as the control of body temperature, helping to regulate respectively the preservation and elimination of heat. Blood vessels are the routes of the cardiovascular system, which are responsible for being a means of transport for blood with and without oxygen that reaches all tissues and returns to the heart. In very hot weather, surface thermoreceptors signal the brain that something needs to be done to dissipate heat. For this reason, a vasodilation process is activated, which allows blood to flow to the outermost layers of the skin. This promotes a heat exchange with the environment, which helps the individual to lower their body temperature. Cold causes a decrease in blood flow by reducing the size of the vessel (arteries or veins) through which blood and other substances circulate. By reducing the size of the vessel, the substances that circulate in the blood are also reduced. The heat causes an increase in the size of the blood vessels, which generates greater transport of nutrients through the blood.

7 0
3 years ago
Yellowstone food web
aniked [119]

wolf and bears are at da top

then they prey other animals like fox, mice, otter, and fish

have a goed day

4 0
3 years ago
Which kind of organism is a heterotroph? photosynthesizers producers consumers plants
ohaa [14]
Consumers because they cant make their own food
6 0
3 years ago
In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific comm
bogdanovich [222]

Answer:

The correct answer will be-

1. Chromosomes are made up of protein and nucleic acid.

2. Genes are located on chromosomes.

3. Chromosomes are found in the nucleus.

Explanation:

Watson and Crick are known for their findings on the structure of DNA in 1953. Their findings were motivated by the book called "What is Life?".

The book stated the concepts which were well accepted by the scientific communities that is the gene determines the trait which is located on the chromosomes proved by the experiments of Morgan.  

The chromosomes are the condensed structure present in the nucleus was suggested by the Nageli in 1884. The chromosomes are composed of nucleic acid and protein was also proved and was well-accepted fact.

But the genes are made up of DNA was not well accepted which was suggested by the experiments of Avery in 1940s.

Thus, the selected options are the correct answer.

5 0
3 years ago
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