If antibodies can cause allergic reactions, then allergic reactions can be caused by? Answer choices: - animals - smoking pipes - Sulfur dioxide - Chemical energy - fur and fat - antibodies - smoking tobacco - Pesticides
antibodies

If atumor can be burned away when an electrical circuit is working properly, then when the electrical circuit is working properly, what can happen? Answer choices: - dogs can run - heat production - enormous damage to homes - a tumor can be burned away - massive damage - sperm and egg fuse - baskets can be hand-woven - bacteria can thrive
a tumor can be burned away

If mutations can occur during the reproduction process, then what can happen during the reproduction process? Answer choices: - tree falls - Mutations - Plants growth - movement - competition - adding heat - contamination - Dehydration
Mutations