Answer:
Directional selection
Explanation:
Directional selection is a type of natural selection that favors one extreme phenotype of a genetic trait due to its survival and reproductive advantage to the individuals over another extreme phenotype and the intermediate phenotype.
In the given example, the thick-leaved plants are better adapted to a drier climate due to reduced water loss. Directional selection favored the plants with thick leaves which in turn produced more progeny. Over the generations, the population evolved into the one having more number of thick-leaved plants.
Answer: Calories are the amount of energy released when your body breaks down (digests and absorbs) food.
Explanation:
The more calories a food has, the more energy it can provide to your body. When you eat more calories than you need, your body stores the extra calories as body fat. Even a fat-free food can have a lot of calories
Nitrogen,<span>The atmosphere is composed of ~78% nitrogen and ~21% oxygen, with small amounts of other gases. The bulk composition of the earth by weight is mostly, iron, oxygen, silicon and magnesium, in that order, with all the other elements making up only about 5% of the earth's weight.</span>
Answer:
Tt x Tt = 1 TT : 2 Tt : 1 tt
Explanation:
Not much to explain, just a <u>Punnett Square</u>: (offspring bolded)
T t
T TT Tt
t Tt tt
A) after 1911 gradual increase in deaths pattern explains that smoking causes cancer !
b) after 2001 , the graph will continue decreasing, because of the steps taken by government, the steps by people itself !! that all helps in decreasing deaths and cancer number after 2001 !
