The keystone species is the one at the bottom of the pyramid, if we look at it like a pyramid. If the grass dies, then the deer cannot get food and die, and the predator cannot eat and dies, and the whole ecosystem can fall apart.
Antibiotic used include kenamycin, ampicillin and tetracycline. This is useful to determine if and which bacteria took up the plasmid as they were supposed to during the process of recombination. Host bacteria are normally killed by these antibiotics. If the recombinant plasmids were taken up by the bacteria, plasmid may have contained a DNA gene for resisting the effects of one or more antibiotics. Host bacteria are placed in a growth medium containing an antibiotic to which they have a resistant gene in their recombinant plasmid DNA survivor. If they havent taken the plasmid they die.
Answer:
precipitation, condensation, evaporation, soemthing else, water, clouds, surface ruunoff, etc
Explanation:
hope it helped on science
Some living thing's bodies are weaker than others. For the species to live, the strong ones of the species will not get sick, reproduce and create strong offspring. The weak will die out.
The answer is Glucagon Increases. This works like this after
a meal of a rich carbohydrate, over four to six hours the blood glucose level
rise, leading to an increase in glycogen. Produced by alpha cells of the
pancreas and released in response to low blood glucose and epinephrine.
Secretion inhibited by high blood glucose and insulin. Stimulates glycogen
breakdown and inhibits glycogen synthesis
