The number of chromosomes in a sex cell is half the number of chromosomes in a body cell. Think of it this way: 1 egg (women sex cell) combine with 1 sperm (male sex cell) to make 1 whole cell.
This compressed, slender body shape is beneficial because it allows the fish to easily fit into vertical crevices. This is probably why the fish live on coral reefs and in rocky areas, because there are enough crevices for these fish to fit into.
Answer:
A). Organisms within a population compete with each other to survive.
Explanation:
Charles Darwin in his evolution theory proposed that the organisms of all species emerge and develop via the 'natural selection' of tiny, inherited discrepancies and these disparities enhance the individual's ability to contest and compete with each other in order to survive and reproduce to continue their existence. This led to the emergence of the phrase 'survival of the fittest' which suggests that in this competition of 'natural selection', only the fittest will survive. Thus, <u>option A</u> is the correct answer.
Answer:
by mimicking disease agents and stimulating the immune system to build up defenses against them.
Explanation:
Answer:
Option (1).
Explanation:
Dual x-ray absorptiometry technique is used for the evaluation of the bone mineral density. The bone densitometry is normally used in this technique to estimate the mineral content of bone.
The radiation dose in the absorptiometry is considerable and only small or low amount of radiation dose is considered. The heavy dose may cause health problems in the individual. The photon energies are used for the bone and soft tissue. The treatment of osteoporesis can be done by this technique.
Thus, the correct answer is option (1).
