The heart must beat faster during exersise because by increasing the heart rate the body is able to increase cardiac output and deliver the necessary blood flow to the mucles
A food chain is a linear representation of the energy going through organisms while a food web shows multiple connections between the organisms.
Answer:
sugars
Explanation:sugers because they are bad to health
Answer:
Its creates air pullution, Burning of fossil fuels produces oxides of carbon, nitrogen, sulphur, etc. that cause acid rain, which affects the soil fertility and water.
Explanation:
