In summary, the human body<span> is made of 11 important </span>organ systems<span>, including the circulatory, respiratory, digestive, excretory, nervous and endocrine </span>systems<span>. They also include the immune, integumentary, skeletal, muscle and reproductive </span>systems. Thesystems<span> work together to maintain a functioning </span>human body<span>.</span>
It’s b the pine tree has unprotected seeds, the apple tree has seeds in fruits
An ionic bond results in an exchange or transfer of electrons between the 2 different types of atoms, most likely the metal atom and nonmetal one.
For example the compound NaF is held together by electrostatic forces of positive and negative charges due to the transfer of electrons from the sodium to fluoride atom.
Answer:
Nitrogen is a constituent element and is part of many compounds in plants.
Explanation:
Nitrogen is a building block and there is no process in plants that is not affected by nitrogen.
If there is not enough nitrogen in the soil, the growth decreases, the leaves are yellow, pale green, chlorosis occurs, the root is removed, its branching is reduced, the yield and quality of fruits are reduced.
Due to pollution the ozone layer of the Earth is being more and more affected. The main function of ozone is to absorb the Sun's UV radiation. Exposure to UV radiation is known to increase the risk of skin cancers.
Thus, young adults could get higher levels of UV radiation from the sun compared with their grandparents, due to pollution.
Increased sun exposure may also be another cause. Today, it is more and more popular to spend a lot of time at the beach. Traveling to other countries to do this is more accessible today for young adults.
However, tanning beds which are very popular with young people, are another source of high levels of UV radiation.
