B.Sometimes true,As you sometimes to need to learn on the alternative provided in getting a solution that is factual
After the solar cycle takes place, bigger sun spots appear, flares appear, and the solar radiation changes.
If this doesn't answer your question, I'll try again. If there are options feel free to comment them as it can narrow down my choices.
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So this my friend is a Contact Force. Anything that involves pushing, pulling, or creating friction is a contact force. So you will say it’s a contact force. Please Mark me brainliest
A. the runner's muscles have accumulated lactic acid.. I think. 99% sure