Observational study because the scientists are just observing the flock and not touching them or anything :)
Answer:
Plants absorb carbon dioxide,water and sunlight to make their own food,grow and release oxygen through photosynthesis. They're also huge part in keeping our air clean, The carbon becomes part of the plant ; When humans burn fossil fuels, most carbon enters the atmosphere as carbon dioxide.
Explanation:
Answer:
Exercise is responsible for the increasing heart beat.
Explanation:
Exercise is responsible for the increasing heart beat because our body needs oxygen more faster during exercise. When we exercise our body needs quick energy and oxygen which can be provided by heart as well as the heart also removes carbondioxide which is produces during respiration process so the heart beat increases in order to provide energy and oxygen to the muscles.
Your answer is A. Midbrain, pons, and medulla.
Blood flow is
Redirected
According to metabolic needs
