D. They come from other living things
Explanation:
The cell theory states that all living things come from preexisting cells.
When the body works in the opposite direction it is know as Negative feedback
A is the stimulus. Stimulus is a response, and the plant growing toward the light is a response. So, the answer is A.
Marco knows the medicine is safe because it was prescribed to him by a doctor.
Answer:
The different classes of waste produced in a house can be classified as follow: organic waste, liquid waste, solid waste and recyclable waste
Explanation:
In family homes, it is important to understand which are the types of waste in order to know how to dispose of them properly in an environmentally friendly way. First, liquid waste from the bathroom and kitchen is usually directed to the main sewer line or eliminated by septic tanks that serve as sewage collectors. Second, organic and recyclable waste is biodegradable, thereby this type of waste is usually disposed of in incinerators or landfills. Third, solid non-hazardous waste can be eliminated by compressing with mechanical systems and covered with earth to be finally compacted.
