1. the phrase darwin used to describe his broad theory of evolution is ''descent with .'' 2. all of life is related through common ancestry, accounting for the of life. 3. the of life arises from the adaptation of species to different habitats over long spans of time. 4. darwin proposed a mechanism for how evolution occurs, which he called . 5. two key observations underlying natural selection are that members of a population vary in their and that all species can produce more offspring than the environment can support. 6. darwin inferred that those organisms with traits best suited to the environment tend to leave more than other members of a population. 7. this unequal reproduction in a population leads to the gradual accumulation of to the environment.

1. The phrase Darwin used to describe his broad theory of evolution is *descent with MODIFICATION."

2. All of life is related through common ancestry, accounting for the "UNITY" of life.

3. The "DIVERSITY" of life arises from the adaptation of species to different habitats over long spans of time.

4. Darwin proposed a mechanism for how evolution occurs, which he called "NATURAL SELECTION"

5. Two key observations underlying natural selection are that members of a population vary in their "inherited traits"

6. Darwin inferred that those organisms with traits best suited to the environment ten to leave more "OFFSPRING" than other members of a population

7. This unequal reproduction in a population leads to the gradual accumulation of "adaptations" to the environment

the animal that would be cutest if scaled down to the size of a cat? elephant

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.