Why do people go pale when they are cold?

1 answer:

3 0

People get pale when they’re cold because your body is trying to conserve heat. Heat is nessecary to maintain homeostasis, and in a response to this, your blood vessels in your skin constrict (get smaller), so less blood goes to your skin, so that your body can redirect the blood to your core, where all the good stuff is like your organs.

Blood is what makes our skin a pinkish color, if white people did not have blood, we would look like vampires. When there is less blood in your skin, the pink color goes away and leaves a pale white.

I hope this helps!

You might be interested in

Imagine that you have found the remnants of a robin's egg on the ground. From your biology course, you know that this eggshell i

amid [387]

Answer:

The birds are oviparous in nature and produces eggs that are hatched later by the parent. the egg hatching require proper heat and protection from the external enemy.

The egg shell is the hard covering of the egg of the bird that is made of the calcium. The egg shell protect the egg from the external environment. The calcium layer for the egg shell formation is obtained by the oseteoclast property of the cells.

6 0

3 years ago

Describe the importance of biomes such as forests, freshwater, and marine biomes? How have human actions affected these biomes?

Allisa [31]

Forest biome: It gives us medicinal plants, woods for commercial purpose. Forests provides us rubber and fibers that is very important for the industries for making various products. They also contribute to perform ecological functions such as carbon storage, nutrient cycling, water and air purification. It also provides habitat to the wildlife.

Freshwater biome: We use fresh water for drinking water, irrigation, sanitation systems, and in industrial factories. Water used from groundwater, rivers and lakes is regained by rain and snowfall.

Marine biome: It serves huge amount of oxygen into the environment and absorbs the atmospheric carbon dioxide.

As a result of the activity of human there is a significant decrease in the number of trees. The products now used are synthetically made which were made up of natural fibers previously. The water source such as rivers, lakes, and ponds are polluted due to which many water borne diseases are increasing day by day. The accumulation of waste which are found in marine biome are reducing the number of flora present inside marine ecosystem.

3 0

2 years ago

Read 2 more answers

List three ways by which phosphates are transferred from the land to water. In your own words, explain how these might impact th

masya89 [10]

Phosphates generally come from fertilizer, erosion of phosphate-containing rocks. they are fertilizers, so they tend to strongly encourage growth, particularly of bacteria and algae. This can harm ecologies, particularly in water, and particularly where there isn't a very robust growth medium already, e.g. in cold or desert waters.<span>This impacts the environment and our health because we use tap water for cooking, bathing, brushing teeth, and etc. and these water by be contaminated because of all of this pollution going around</span>

5 0

3 years ago

Read 2 more answers

2. Describe a flood along a coastline. What might cause this?

Fed [463]

Continental plate moving on the sea floor.

6 0

2 years ago

Read 2 more answers

Identify one way in which bacteria differ from humans. A. Bacteria are single-celled. B. Bacteria do not reproduce. C. Only huma

velikii [3]

The answer is A, bacteria can move around, use energy, and reproduce just like humans can, the only difference is they're single cell and we're not.