Question

when developing a hypothesis on global warming, one group of scientists claims that they know global warming is occurring because degrees celsius over the last 100 years. another group of scientists states that global warming is not happening due to the fact that the earths degrees celsius in the past 100 years. what data best strengthens one of the claims and weakens the other? changes in ecosystems over the last 100 years long term temperature predictions for the next 100 years variances in temperature since the recording of temperatures began data representing the increases in the development of energy efficient technology

Explanation:

Step1: Identify the claim

One group claims global - warming is occurring, the other claims it's not.

Step2: Analyze data relevance

Data about changes in ecosystems over the last 100 years can show if there are real - world impacts consistent with global warming (for the pro - global warming claim) or lack thereof (for the anti - global warming claim).

Step3: Evaluate other options

Data on temperature variances since records began is too general. Long - term temperature predictions for the next 100 years are speculative. Data on energy - efficient technology development is unrelated to whether global warming is occurring.

Answer:

changes in ecosystems over the last 100 years