Answer:
Excretion is the process by which cells and organisms rid themselves of waste.
Either chemical or light, chemical because it’s a chemical reaction or light because it is light dependant
Answer:
The two point sources of water pollution in the image are coal-burning power plant and factory.
Explanation:
Pollution refers to the release of waste and harmful substances to the environment. Substances which are harmful to the environment are known as pollutants.
Water pollution involves the contamination of water by pollutants making it unfit for human use such as such for drinking or cooking or for other uses.
The source of pollution water bodies have been divided into point and non-point sources of water pollution.
Point sources release pollutants from a single source and are transported directly through media such as a discharge pipe. The main point source of water pollution are factories and sewage treatment plants.
Nonpoint source pollution comes from various sources usually a combination of pollutants from a large area rather than from a specific sourc that can be easily identified such as discharge pipes. Most common is runoff water from city streets or agricultural settlements.
The two point sources of water pollution in the image are coal-burning power plant and factory
The correct option is this: HE COULD DETERMINE WHETHER THE HYPOTHESIS IS BASED ON REPEATED EXPERIMENTS.
An hypothesis is a proposed explanation based on prior knowledge which serves as a starting point for scientific experimentation. After the experiment, if the hypothesis is confirm to be true and other scientists test it also and find it to be true, then the hypothesis can be regarded as theory, because it has been tested many time and find to be true.<span />