Answer:
ur ret4rded
Explanation:
bro ur stu p id this is 4th grader sh1t
Before a chemical reaction can start energy must be absorbed by the reactants. The amount that must be absorbed to start the reaction is called the activation energy. you're right, t<span>he activation energy must be reached.</span>
Protozoa
Ps - a thanks would be appreciated
Answer:
Yes, there are nuclear reactions constantly occurring in our bodies.
Explanation:
Options for the questions are not given. They are as follows :
A ) 1,2,3
B) 2,3
C)1 ,3, 4
D)1
E) 1 through 4
Answer:
C) 1,3,4
Explanation:
Some aphids make black walnut trees their habitat in the forest and only prefer to mate with aphids who have the same habitat. This is an example of reproductive isolation since these aphids now have different mating preferences and hence are isolated from rest of the aphids. The isolation occurred on the basis of difference in habitats so it is also an example of habitat isolation. Since the mating is prevented all together it is also an example of prezygotic barrier i.e. formation of zygote is inhibited. However, it is not an example of allopatric speciation since the aphids are not separated geographically from each other. They are present in the same area but have different habitat preference. Hence, option C is correct answer.
