According to the United States Department of health and human services, in order to obtain sufficient physical activity for health, the Americans should perform the following activities:
1. 75 minutes per week of vigorous-intensity activity.
2. 150 minutes per week of moderate intensity activity.
3. Or, an equal combination of both moderate and vigorous-intensity activity
The one that cause the Biodiversity Of rainforests is Stable ecosystems
Answer:
The valves The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction.
Explanation:
it is right hope this helps
Th other author of the natural selection is Alfred Russel Wallace.
Died 100 years ago, Alfred Russel Wallace, a British naturalist, co-discoverer with Darwin of natural selection, also showed that the formation of species was a consequence of the dispersion of populations and a reflection of their evolutionary history.
