Answer:
The correct answer is - chromatin.
Explanation:
Chromatin is a part within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions and these are complex structures present in multiple linear chromosomes.
The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus.
Answer:
The natural environment directly influences children's well-being by playing significant roles in food and nutrition, water and sanitation, disease and immunity, physical and mental development, and hope and security. ... A healthy natural environment is the foundation of successful long-term development
An organism's trophic level refers to the food chain position that it occupies. Producers always occupy the Trophy level 1, Primary Consumer occupies the Trophy level 2, Secondary Consumer has the Trophy level 3 and the Tertiary level fills in the Trophy level 4.
Acid rain makes waters acidic, and causes them to absorb the aluminum that makes its way from soil into lakes and streams. This combination makes waters toxic to crayfish, clams, fish, and other aquatic animals. (Learn more about the effects of water pollution.)
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Warmer water is lighter, so it wants to expand. That's why the ocean water is constantly moving. This means the density of water is always changing. So, the answer is number 4, bodies of water at different tempuratures have different densities.
