Answer: It is A
Explanation: C and D are jokes/ complete lies. B is wrong because Darwin did observe that animals and plants adapted (evolved) to suit their environments.
<span>Any of the chemical reactions that take place during the second stage ofphotosynthesis and do not require light. During the dark reactions, energyreleased from ATP (created by the light reactions) drives the fixation ofcarbon from carbon dioxide in organic molecules. The </span><span>Calvin cycle </span><span>formspart of the dark reactions. As long as ATP is available, the dark reactionscan occur in darkness or in <span>light. </span></span>
Answer: A). Teens
Explanation:
Experts classifies this as "Gerontophillia" which is defined as the primary sexual attraction to an older person.
Experts suggests that possible motivations are from rage, sadism or an increase vulnerability of the elderly as a social group.
The given is incomplete as the options are missing. The correct options for the given question are as follows-
(A) cultivation of agricultural land inhibits the decomposition of organic matter
(B) nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides
(C) land that is available for agriculture tends to be nutrient-poor
(D) the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested
Answer:
Option (D)
Explanation:
In order to carry out agricultural practices, the soil must be rich in essential nutrients for the growth of crops. The soil fertility is a key role in the production of crops.
This agricultural land often requires a large amount of these nutrients and minerals because some of the nutrient minerals are converted into plant biomass which is then used up to produce energy in other sectors. So, the nutrients that were present in the soil are taken away and not transferred back into the soil. This means that the nutrient cycle gets affected. Due to this reason, there requires a constant supply of nutrients into the agricultural fields.
Thus, the correct answer is option (D).
