Answer:
a) Increased heart rate, increased blood pressure, increased respiration rate.
Explanation:
When a person do any physical activity like running, jogging, cycling, swimming and stair climbing, the heart rate, blood pressure and respiration rate of a person are increased because due to physical activity, the body needs more oxygen and energy. This oxygen is provided by heart through pumping of blood and energy is released due to the breakdown of glucose molecules in the process of respiration.
Its the second option....................................... :)
C: rainforest are biologically more diverse than ecosystems.
Explanation: the reason why this is correct is because of the vast ratio of American and Europeans animal/plant species compared to Brazil alone. They have much more diversity hence having more biodiversity. The vast amount of plants and animals are superior to other countries.
The answer to your question is A