The numbers 3 and 4 means that there are 3 Nitrogen atoms, and 12 Hydrogen atoms in the chemical formular (3NH4). The 3 coefficient in front of the compound applies to all of the elements while the 4 applies to only hydrogen (H). This means that the compound contains 3 Nitrogen atoms and 12 (4 multiplied by 3) Hydrogen atoms.
Neurotransmitters, such as acetylcholine--the major neurotransmitter found in the human body, act over a short time and they are quickly removed from the synapse by enzymes (i.e. acetylcholinesterase which breaks down acetylcholine to acetyl-CoA and choline).
Answer:
D
Explanation:
Because there has to be competition or one population wouldnt decrease and the other wouldn't increase due to survival and reproduction the population doesn't always have to be below the carrying capacity because it can also do it when its above and natural selection can act on traits determined by different alleles.
Answer:
Masa de las moléculas que se difunden: las moléculas más pesadas se mueven más lentamente; por lo tanto, se difunden más lentamente. Lo contrario es cierto para las moléculas más ligeras. Temperatura: Las temperaturas más altas aumentan la energía y por lo tanto el movimiento de las moléculas, aumentando la velocidad de difusión.
Explanation:
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<span>Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagasdisease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodiumprotozoa cause malaria.</span>
