Answer:
Crossing over during meiosis creates genetic variation.
Explanation:
Both nuclear and chemical equations are balanced according to the total mass before and after the change.
In every equation or reaction, the total mass of the reactants must be equal to the total mass of the products. In other words, all reactions - be they chemical or nuclear - must obey the law of conservation of mass.
The law of conservation of mass states that mass can neither be created nor destroyed, but can be converted from one form to another during a reaction.
Thus, in order to balance reactions involving chemical or nuclear reactants, the total mass before the reaction must be equal to the total mass after the reaction.
More on the law of conservation of mass can be found here: brainly.com/question/13383562
as you climb higher in the atmosphere, there are three things that happen to your body, one is the circulatory affect, when there is hardly any oxygen in the blood, your body will start to react to this change in supply and either shut down, ((your lungs will give out, and you will pass out because of the lack of O2 in the brain)) or you will become Carbon-drunk. ((your cells will began to literally explode or shrink because of the fact there is no way to filter out your cells of the used up oxygen))
the second thing is with respiratory, your breathing will slow down and it will become hard to breath. its true that oxygen is lighter than carbon-dioxide, but oxygen is heavier then nitrogen and helium. Your body will start to feel heavier than normal and you will become weak. you will start to feel light-headed and eventually pass out if this feeling is new to you.
Third is the carbon affect, your body will end up dying because of it "reusing" carbon cells, and you will end up going into a coma because of the brain damage from no oxygen and too much carbon
Answer:
Global Conveyor Belt, a deep ocean current, is important because it ___. helps regulate global climate, it transports nutrients around the globe, and it transports warm water to colder regions
Explanation:
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Answer:
Genetic drift happens when its adapted organisms survive and reproduce more often than poorly-adapted organisms
1. differential reproduction, that is, not all organisms are able to reproduce to their fullest capacity because nature cannot simply sustain it
2. acquire genes that is heredity.