Answer:
Answer is B. a fracture or crush injury causes bleeding or swelling in an extremity.
Explanation:
Compartment syndrome is a painful condition in which there is an increased pressure within muscles or one of the body's compartment, resulting in insufficient blood supply or blood flow to tissue around or within the area.
It majorly affects the compartments of the leg or arm, and could be acute or chronic.
An acute compartment syndrome requires a surgical emergency, while the chronic is not a medical emergency.
Some of the symptoms are severe pain, numbness and pale color of the affected area.
1.)Coral reefs are busy underwater ecosystems. Some people call them the “rainforests of the sea.” The corals look like rocks but actually are animals. They have hard calcium carbonate skeletons like clams. They form a base for lots of other organisms to live. You’ll find crabs, sea stars, worms, clams, sponges, jellies, sea turtles, and lots of fish. Coral reefs are complicated and very fragile. They are easily affected by pollution.
2.) Tropical rainforests are near the equator where it’s almost always warm and wet. These are the key ingredients for making lots of lush plants and trees. Half of the world’s plants and animals live in tropical rainforests. It’s a very busy ecosystem with many kinds of plants, animals, fungi, and microscopic organisms. Many of them live here and nowhere else.
3.) In the world’s many deserts, there is very little rain. The land is very, very dry. Here, living things have creative ways of finding and saving water. Cactuses are very good at storing water. They can live without rain for months. The kangaroo mouse lives in the Nevada desert. It rarely drinks water. It can get its water from the food it eats.
Answer:
Image result for How did dark brown skin evolve from our ancient early ancestors?
Evolution. Due to natural selection, people who lived in areas of intense sunlight developed dark skin colouration to protect against ultraviolet (UV) light, mainly to protect their body from folate depletion. Evolutionary pigmentation of the skin was caused by ultraviolet radiation of the sun.
Explanation:
Hope it helps!
The correct answer is option b.
One way by which wetland controls flood is by absorbing water from rivers. Wetland absorbs water and and store it. Afterwards it releases slowly.It behaves like a sponge. It also protects nearby houses flooding and vegetation too.It reduces the water flow and settles down the sediments and pollutants also.
Answer:
Planarian stem cells are known as neoblasts. The nature of the neoblasts and the processes that occur as regeneration is activated and carried out are still being investigated.
Explanation:
Humans also have stem cells, but to a more limited extent than planarians. The cells have a characteristic known as potency and are classified as follows:
Totipotent stem cells can produce every type of cell in the body plus the cells of the placenta.
Pluripotent cells can produce every type of cell in the body but not the cells of the placenta.
Multipotent cells can produce several types of specialized cells.
Unipotent cells can produce only one type of specialized cell.
The stem cells in planarians are pluripotent (or at least the ones that have been studied are). There are so many of them throughout the body that even a small piece of a planarian contains the cells.
