If heating an egg results in chemical changes, then heating an egg results in chemical _.? Answer choices: - Energy. - voltage - synergy - burns - chains - heat - changes - energy
changes

If plant and animal residue increases the amount of nutrients in the soil, then what does plant and animal residue increase in soil? Answer choices: - Scent - Temperature - Bugs - rainfall - fossil fuels - Water - energy - Nutrients
Nutrients

If eating food that contains DDT can have a negative impact on humans, then eating food that contains _ can have a negative impact on humans.? Answer choices: - harm - nitric oxide - rust - Lead - acid - glycogen - genetic engineering - DDT
DDT

If blood vessels generally carry deoxygenated blood, then what generally carries deoxygenated blood? Answer choices: - blood vessels - animals - layers of fat - mammals - critical organs - an organism's body - elephants - athletes
blood vessels