The correct answer is - D. Biodiversity resulting from few ancestors.
The adaptive radiation is an evolutionary process in which diversification is appearing among a species, and it starts to fill in different ecological niches.
The adaptive radiation occurs when a species starts to evolve into multiple different species. The reason for the diversification is available space in the ecologic niches. The members of the initial species, start to exhibit new behaviors, new ways of feeding, change in coloration, all in order to be better suited for a specific ecological niche.
Answer:
D
Explanation:
Mechanism of macroevolution works by multiple acts of speciation on an ancestral organism.
The question is incomplete as it does not have the option which are:
1. Major depressive disorder
2. Disruptive mood dysregulation disorder
3. depressive disorder with short duration hypomania
4. Dysthymia
5. Schizoaffective disorder
Answer:
4. Dysthymia
Explanation:
Dysthymia or persistent depressive disorder is a long term depression disorder or mood which leads to the symptoms of depression like a sad mood which directly affects the social life like in school or at home or work.
The person with dysthymia feel low-self esteem, inadequate and lose interest in normal activities and the symptoms may last for a year but the symptoms continuously do not last for more than two months.
In the given question, the boy feels that he feels down, depressed mood, hopelessness which are the symptoms of the dysthymia in the early stages.
Thus, Option-4 is the correct answer.
The first event or first thing they do, because the first thing they do is exercise for 2 hours everyday to keep their muscle and bone strength.