What is the definition of insecticides

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Which is the best example of plant tissue? the answer is d (just took the test)

What are positive impacts of algae? how is it used?