Answer:
You can record an observation; an inference is an idea.
Explanation:
Observation is the act of observing, it means having your attention directed to something specific, with the intention of later judging, analyzing or investigating a certain thing or someone. An observation can be recorded, filmed, photographed and recorded in any way that helps you to reason about what you observed. From the observation you can make an inference.
Inference is the action and the effect of inferring (deducing something, drawing a conclusion from something else, leading to a result). Inference arises from an observation and mental evaluation between different expressions that, when related as abstractions, allow us to trace a logical implication. In crazy words, inference is an idea.
I believe the answers are removing substances in an ecosystem and the usage of organisms to add important materials. Bioremediation naturally happens where small organisms would clean up soil and groundwater that is contaminated. While the latter, is a process where you add organisms to hasten the degradation.
Answer: A
Explanation: A rabbit and bacteria are both living so following MRSGREN they both must obtain nutrients and water and get rid of waste.
I believe the correct answer is D. All of the above.