Answer:
its A
Explanation:
because digestive systems has to do with food such as solid and liquid one you do a swallow the food goes through your digestive system
Answer:
D) four.
Explanation:
The two atria hold the blood that circulates away from the heart. The heart has four one-way valves, which open and close with each heartbeat. The tricuspid valve and the mitral valve are located between the atria and allow the blood to flow from the atria to the ventricles. Also you don't have to but mind marking Brainliest?
Cardiovascular exercise is an <span>example of defending against cardiovascular disease through prevention.
Exercise helps our body to increase physical activity which enables agility and improve strength. Moreover, exercise also engages us to become more energetic and healthy by increasing metabolism and mental state. </span>
Answer:
<em>B. Many of these substances, when eaten, cause serious health problems over time.</em>
Explanation:
Electronic wastes are unwanted electrical or electronic material that has been thrown out by the user to be managed by waste managers. Mismanagement of electronic wastes can lead to a serious threat from the heavy metal deposit, this can affect the environment and humans.
During recycling, some of the heavy metal such as lead, cadmium, and Mercury is released to surrounding water bodies also direct disposal of such waste can result to increase of such metals.
As a large amount of heavy metal enters the river, it gets accumulated in the tissues of fishes overtime. Long term consumption of fishes that are affected by heavy metal poisoning can lead to some health-threatening issues such as;
<em>Therefore when fishes are affected by lead poisoning they affect human when eaten over time.</em>
Decrease the intenseness of the stepper machine so his heart rate doesn't go over his target heart rate zone.
