Answer:
Being the first level, the simplest and the fourth, the most complex, are organized like this:
1. Acts: represented by concrete actions.
2. Habits: represented by grouping of acts.
3. Traits: represented by association of related habits.
4. Types: represented by trait association.
Chloroplasts could be found in blue-green algae
My best guess would be D. many studies have linked cardiorespiratory exercise to the lowering of blood pressure. (Many studies have also linked going vegan to the lowering of blood pressure, too :)
Answer:
A
Explanation:
All the other ones are safe options for the community
D. Germs is the correct answer.