Answer the below question choosing either a, b,c, d

Which of the following shows the changes that occur in the cardiovascular system during physical activity?

a) Increased heart rate, increased blood pressure, increased respiration rate

b) Increased heart rate, decreased blood pressure, increased respiration rate

c) Decreased heart rate, increased blood pressure, increased respiration rate

d) Decreased heart rate, decreased blood pressure, decreased respiration rate

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.

i think the answer is g1

hope i

-lavira: )

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.