Answer:
D. mixture
Explanation:
because the mixture is not part of an atom
Basically the evolution of species which was his main theory implies that species evolve from usually lower to higher forms and for example mankind or homo sapiens had ancestors that developed upright posture as opposed to the apes and this upright posture was preserved throughout the various human-like species like Neanderthal Man, Peking Man etc. right up to the present time.
The condition is which characteristics of atmosphere III is nitrogen-rich and oxygen-poor. Nitrogen-rich is one of the condition in which the atmosphere III characterizes. The other is oxygen-poor, is one of the condition characterizes atmosphere III. Nitrogen-rich material mostly called green because they are greenish in color. Oxygen-poor means the blood enters the RA or Right atrium or the upper chamber of the heart.
Answer:
Ribozymes can also act like catalysts.
Explanation:
Ribozymes are pieces or fragments of RNA that can act as catalysts of some reactions in the cell. These can bind RNA nucleotides without the action or presence of proteins and they can also be involved in the splicing process (deleting the introns).
This suggests that a certain amount of body fat is necessary for menstrual cycles to occur. The nervous system appears to respond to circulating levels of the adipose tissue hormone leptin; when leptin levels fall below a certain set point, menstruation ceases. Because a woman lacking adequate fat reserves might not be able to have a successful pregnancy, the body prevents pregnancy by shutting down the ovarian cycle, and thus the menstrual cycle. Once sufficient energy reserves become available, the cycles begin again.