Answer:
D. by taking in oxygen and cleaning out waste gases like carbon dioxide.
Explanation:
The respiratory system cleans out your carbon dioxide and replaces it with oxygen.
In scientific inquiry, observations can be made in many ways. This includes by using the senses, or performing an experiment.
The correct answer is social support.
Social support refers to the actuality and perception that one is cared for, has support accessible from other individuals, and most importantly, that one is a part of a supportive social network.
The four kinds of social support are:
1. Emotional: Expressions of love, empathy, caring, and trust.
2. Informational: Suggestions, advice, and information.
3. Instrumental: Tangle assistance and service.
4. Appraisal: Information, which is beneficial for self-assessment.
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
Exercise is a subset of physical fitness.