If you put the onion cell in a solution with a high concentration of salt the solution is considered hypertonic. That means the onion cell will loose water. The membrane will shrink but the shape of the cell will stay the same because of the cell wall.
Everybody knows that positive charge is due to protons and negative charge is due to electrons, but what does the charge mean?
Why were negative and positive charges so designated?
Was it also a possibility to call the charge of an electron positive and the charge of a proton negative?
tectonic plates in the earth's crust has moved almost every piece of land from its original spot. On average, tectonic plates moved land masses about 2.3 CM a year.
The correct answer is option D, difficulty of redesigning workable ecosystems
Reason -
The area that was redesigned into an ecosystem actually failed to attract the endangered species of clapper rails in California because of the following two reasons –
a) Failed attempt of restoration of Cord grass ( a tree which is a dominant tree in the nesting habitat of clapper rail) . Even if few such trees were there they could not grow to their full height and thus were incapable of providing adequate nesting cover
b) Due to the lack of predatory insect, some herbivore insect in the ecosystem attacked the green grasses thereby making the nesting inadequate.
No, although there are several theories with increasing evidence, there is still no way to know for sure how it occurred. The great mystery of the beginning of universe is way too vast and vague. Theories can only be proven by presenting a solid proof, but great creations such as universe itself doesn't have to be solved. Various possibilities must have happened or there must be a one conclusion leading to its existence; but moreover, it is not our problem to solve. The confirmation of beginning of its existence will only feed the curiosity of humans.
