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metals (left side of periodic table) become positive ions so calcium would be the answer
Answer:
identify the variables
Explanation:
control:type of lemon used
dependent:whether apple slice turns brown at pH>2
independent:pH value
Answer:
The mantle is solid.
Explanation:
The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers thick, and makes up 84% of Earth's total volume.
Answer:
The main function of the pulmonary alveoli is to perform the transfer and exchange of gases. In this case, the following gases are included: oxygen, carbon dioxide and gases. Of the elements listed, the only one that is not transferred by the alveoli is the blood.
Explanation:
