That is true and cacti with many spines are typically preferred by parasites. This is an example of bidirectional selection in which evolutionary pressures from multiple sources encourage an organism to adapt.
You can confidently conclude that the concentration of the unknown solution is less than 100ppm. Because the concentration of the liquid in the beaker is higher than that of the unknown solution that is why water move out of the dialysis bag into the beaker of water. Thus, the solution inside the beaker is an hypertonic solution, that is why it deflated the dialysis bag.
SUN, MOON AND EARTH
The moon has to be in between the Sun and the Earth.
On a solar eclipse, the Sun, Moon and Earth are aligned in a way that half of Earth does not receive light for the fact that the moon is covering it.
Hope it helped!
Its C, as in active transport the substance tends to move from a reigon of high concentration to a reigon of lower concentration, against the concentration gradient. for example: mineral salts from soil move by active transport to the root hair cell.
D is not the answer as water always moves by the process of osmosis.
i hope that helped (:
The majority of the kingdom Plantae are producers:)