Answer:
The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). The heart rate may be too fast (tachycardia) or too slow (bradycardia).
Explanation:
<h2>Answer:</h2>
Paramecium is the single celled organism (unicellular).
<h3>Explanation:</h3>
- An organism which contain only one cell is known as unicellular organism.
- Paramecium is the unicellular parasite. It can move and digest food.
- In its structure there are food vacuoles for the digestion of food.
- Paramecium is the eukaryotic organism because it has a well organised cell with distinct nuclear membrane.
any four cause that attracts youths and adolescent in the intake of drugs are :
A.because of changes taking place.
B. because of developing taking place in body.
.C. to impress others .
.D .because of depression.
Answer:
the branch of public health concerned with monitoring or mitigating those factors in the environment that affect human health and disease.
the condition of the environment in a particular region, especially as regards ecological diversity or pollution.
Explanation:
For example "air pollution is a huge environmental health issue".
