Answer:
uuh, well, the guy that answers the questions with the link is a scammer and DO NOT click the link! it'll ask u to download stuff to ur computer/phone that you have no idea what it is-then u'll have to go and manually uninstall the things it made you download, which is such a pain. the guy also goes by many accounts that start with a b and has no profile pic, and if they answer the question, their answer is immediatly deleted but takes like a day for someone else to answer the question b/c it takes forever to process for that person's account/answer to be deleted-id k why- it just does
Their valency is one and both belong to the third period
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).
The answer would be D. Huntington's disease presents symptoms in humans after many have already reproduced; therefore, they are unaware that they passed on Huntington's disease.
