Video: DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing. Learn the language of nucleotides as we look at the nitrogenous bases adenine, guanine, cytosine and thymine.
Answer:
water is evaporated into the air then the water molecules get too heavy and come back down as snow/rain/ect
Light-colored coats were selected for on light colored sand
After fertilization of the ovule, the megaspore develops into the food supply of the mature seed.
After fertilization of the ovule, the <em />integument develops into the seed coat.
After fertilization of the ovule, the fertilized egg develops into the embryo of the mature seed.
The ovule contains the female reproductive cells of the seed plants and when fertilized, it produces the seed. Ovules contain megasporocytes, cells that produce megaspores through cell division. An integument is a layer that protects and surrounds the ovule. After fertilization, the integument protects and surrounds the seed. After fertilization, the ovule contains a diploid zygote which develops into an embryo.
LD50 or TD50: it is the Lethal Dose 50 (to refer to animals), and Toxic
Dose 50 (to refer to the human being). To refer to animals is: the dose of a
drug, a drug (generally a substance) that kills 50% of a population. To
refer to the human being: it is the dose of a drug, a medicine (in general a
substance) that produces toxicity to 50% of a population.<span>
<span>Find the LD50, it is very important to determine the
dose in which the drug produces toxic effects and thus be able to approach or
deduce the effective dose, that in cases of administering a new drug to the
human being, it is necessary to find the effective dose 50 (Dose of the drug
that produces a therapeutic effect to 50% of the population) in order to
determine the Therapeutic Margin or Therapeutic Index.</span></span>
