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which of the following best describes the long-term impact of using a renewable energy source?

hydropower involves blocking rivers, which disrupts ecosystems.
geothermal energy can pollute water supplies.
nuclear power produces radiation, which is harmful if leaked.
natural gas causes air pollution when burned.

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Are salt and soap nutrients or toxins for yeast? explain.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.