Many plants depend on animals primarily insects for pollination and sexual reproduction. If the animals (insects that pollinate) most flowering plants would be unable to reproduce and would go extinct.
Both plants and animals undergo cellular respiration producing Carbon Dioxide. Animals produce only Carbon Dioxide while plants produce both Carbon Dioxide and Oxygen. If animals went extinct there would be less Carbon Dioxide to support photosynthesis and more complex plants would have a difficult time adapting to the reduced levels of Carbon Dioxide.
Plants that survived the extinction of animals would be much simpler than presently complex plants.
Perhaps some plants would become predators of other plants to absorb the nitrogen content of other plants because of the lack of animals to engage in the recycling of nitrogen content.
carbon
hydrogen
Explanation:
From the given choices, carbon and hydrogen are considered to have a relatively weak degree of electronegativity.
Electronegativity of an element is the tendency with which the atoms of the element attracts valence electrons in a chemical bond.
- Oxygen and nitrogen are highly electronegative elements having a strong attraction for electrons in covalent bonds.
- Carbon and hydrogen have considerably low electronegative values.
According to the Pauling's table showing electronegativities of elements,
N - 3.0
O - 3.5
C - 2.5
H - 2.1
therefore the order of increasing electronegativity is:
H < C < N < O
learn more:
Elecctronegativity brainly.com/question/11932624
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They can all make you ill and be dangerous for the body
site where the cell synthesizes new protein molecules
