Answer:
C. 30 min minutes a day 5 days a week of moderate-intensity exercise or 20 minutes a day 3 days a week of vigorously intense exercise
Explanation:
The combination of aerobic and muscle-strengthening physical activity is crucial for a healthy lifestyle. Regular physical activity can help to reduce the risk of cardiovascular and chronic diseases, disability and premature mortality.
Adults need a moderate physical aerobic activity for a minimum of 30 minutes 5 days a week or 20 minutes of vigorous-intensity aerobic activity. A combination of these two can be done to achieve this goal.
A moderate-intensity physical activity, like <u>fast walking</u>, should produce a noticeable rise in heart rate and breathing. On the other hand, a vigorous-intensity activity, like <u>running</u>, should produce a large and bigger change in heart rate and breathing.
The muscle-strengthening activity, should be performed for a minimum of 2 days a week on two or more nonconsecutive days.
Coevolution occurs when two or more species reciprocally affect each others evolution. The two species in question exerts selective pressure on each other thereby affecting each others evolution. The relationships that might exist include mutualism, predator-prey relationship and host-parasite relationship.
All this gradually shape the two species due to adaptations for survival and competitions.
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<span>They have a one-way digestive system. Hope this helps!</span>
D - i think since phosphates and nitrates play a major role in primary production
