The correct answer is Salinity.
Salinity refers to the principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater. It is the measure of all the salts dissolved in water. It is usually measured in parts per thousand.
a,b,c and d
Explanation:
Most prokaryotes have capsule but most eukaryotes lack capsule
Eukaryotes are generally larger than prokaryotes
The ribosomes of prokaryotes are smaller than that of eukaryotes
Generally, prokaryotes have pili but pili is absent in eukaryotes
The antibiotic was absorbed by the soil and disrupted the balance of the soil. The result was to kill some of the bacteria living in the soil, which were contributing to the growth of the soybeans. There are bacteria which participate in the process of nitrogen fixation, by providing usable nitrogen to the roots of the plants.
An organism may establish a definite area within the habitat and defend it from all other members of the population. The organisms which establish and defend a territory are more vigorous and better fitted members of the population. They are more assured of producing off-springs and thus perpetuating their more favourable attributes within the species.
