Ques:You are presented with the question "what changes sex cells?" and the following answer choices: - copying - growth - clams - mutation - coded genes - transposing - hormones - cancer Now knowing that amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring and traits are initiated by mutation and recombination, choose the best answer.

Ans:mutation
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Ques:You are presented with the question "Deepening rivers cause" and the following answer choices: - relocation - the loss of topsoil - Plant growth is reduced - to move people - Physical weathering - forest is destroyed - Water expanding - water conservation Now knowing that erosion causes a river to become deeper and wider and fertile topsoil is then lost in erosion, choose the best answer.

Ans:the loss of topsoil
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Ques:You are presented with the question "What does a water animal need great amounts of to survive?" and the following answer choices: - Au - sodium - oxygen - gills - water - warmth - Fe - H Now knowing that an aquatic animal requires great amounts of water to survive and clean water is also essential to aquatic life, choose the best answer.

Ans:water
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Ques:You are presented with the question "Which organ helps break down food into nutrients for our bodies?" and the following answer choices: - heart - pancreas - pipe - bacteria - pituitary - enzymes - Proteins - humans Now knowing that the digestive system breaks food into nutrients for the body and the pancreas is an organ that is part of our digestive system, choose the best answer.

Ans:
pancreas
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