I’m pretty sure it’s A but not positive
Something that isn't a major concern could be the wether because the whether usually does not effect his experimental concept. In this case his concept is testing the effects of peanut butter on short term memory
Answer:
1. What element causes this flame color?
3. Will the flame color change if another element is added?
4. Will changing the temperature affect the flame color?
Sexual reproduction produces offspring by the fusion of gametes, resulting in offspring genetically different from the parent(s). Asexual reproduction produces new individuals without the fusion of gametes, genetically indentical to the parent plants and each other, when mutations occur