The main function of xylem tissue in the plant transport system is to transport water.
Answer: C) or the third option.
Reproductive organ incompatibility keeps the species reproductively isolated. ... In another postzygotic situation, reproduction leads to the birth and growth of a hybrid that is sterile and unable to reproduce offspring of their own; this is called hybrid sterility.
The condition known as endocervicitis is an aggravation of the bodily fluid film coating of the cervix. A condition in which patches of endometrial tissue get away from the uterus and wind up joined to alternate structures in the pelvic cavity.
In a few ladies endocervicitis is asymptomatic, now and again the accompanying manifestations might be available:
1-irregular seeping from the vagina;
2-constant dark or white release from the vagina;
3-vaginal agony;
4-torment amid intercourse;
5-feeling offensive distress in the little pelvis;
The process of natural selection is a part of the evolution process. Let's take a herd of animals that live together so as to defend themselves and survive. If animals from the herd don't live by herd rules or similar, they will get eaten by predators or die. In time, the rebellious animals will die out leaving only those that live as a herd, and this trait will be transferred to their off-springs who will in turn behave as the herd too.
A star is provided with energy by a nuclear fusion reactions in its core. A nuclear fusion reaction occurs when the nuclei of two atoms combine to create a new atom. Most commonly, in the core of a star, two hydrogen atoms fuse to become one helium atom.
