Stem cells can give rise to specialized cells. When unspecialized stem cells give rise to specialized cells, the process is called differentiation. While differentiating, the cell usually goes through several stages, becoming more specialized at each step. Scientists are just beginning to understand the signals inside and outside cells that trigger each step of the differentiation process.
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Answer:
The two point sources of water pollution in the image are coal-burning power plant and factory.
Explanation:
Pollution refers to the release of waste and harmful substances to the environment. Substances which are harmful to the environment are known as pollutants.
Water pollution involves the contamination of water by pollutants making it unfit for human use such as such for drinking or cooking or for other uses.
The source of pollution water bodies have been divided into point and non-point sources of water pollution.
Point sources release pollutants from a single source and are transported directly through media such as a discharge pipe. The main point source of water pollution are factories and sewage treatment plants.
Nonpoint source pollution comes from various sources usually a combination of pollutants from a large area rather than from a specific sourc that can be easily identified such as discharge pipes. Most common is runoff water from city streets or agricultural settlements.
The two point sources of water pollution in the image are coal-burning power plant and factory
Answer:
because both balloons have the same charge and are repelling against each other.
Explanation:
because the static charge coming off the balloons is pushing the balloons away from each other
Answer:
Do you mean planets?
if so,The heavy rocky particles within the inner part of the disk formed planetesimals and eventually, inner planets. In our solar system, the four innermost planets Mercury, Venus, Earth and Mars are known as inner planets. They lie inside the asteroid belt. They have volcanoes and valleys and are very hot compared to outer planets.Inner planets are much smaller than the outer planets, and are rocky with an iron core.
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