You are presented with the question "have a circulatory system with one or two hearts" and the following answer choices: - Birds - alpacas - elms - Clams - salmon - animals - toads - complex Now knowing that mollusks have a circulatory system with one or two hearts that pump blood and clams, oysters and snails are familiar mollusks, choose the best answer.
Clams
(Question)
You are presented with the question "What requires a battery to produce light?" and the following answer choices: - peachleaf willow - a dog - electrically - a cat - a flashlight - energy - another battery - heat energy Now knowing that aflashlight requires a source of electricity to produce light and batteries are a very handy source of power, choose the best answer.
(Answer)
a flashlight
Ques: You are presented with the question "what do animals lack?" and the following answer choices: - hearts - skin cells - h2o - the body's largest organ - organic matter - characteristics - green pigment chlorophyll - Chemical energy Now knowing that chloroplasts contain the green pigment chlorophyll and animals lack chloroplasts, choose the best answer.
Ans: green pigment chlorophyll
(Q).
You are presented with the question "Certain types of electricity production can cause acid rain and contribute to:" and the following answer choices: - global cooling - global warming - energy usage - coal mining - deforestation - electrical - Destroy bridges - salinity Now knowing that coal is used to produce electricity by burning in coal-fire power stations and coal-fired power stations can cause acid rain and contribute to global warming, choose the best answer.
(A).
global warming
Ques:You are presented with the question "What do cancer cells produce?" and the following answer choices: - heat energy - direct energy - Energy - massive damage - rays or beams - antibodies - Energy. - Chemical energy Now knowing that antigens are found on cancer cells and the cells of transplanted organs and antibody production is triggered by antigens, choose the best answer.

Ans:antibodies
Question: You are presented with the question "If the smallest unit of an element is neutral and it loses an electron what charge is formed?" and the following answer choices: - positive - nucleus - negative - energy - Energy. - iron - electrically - uncontrolled Now knowing that if a neutral atom loses an electron then an atom with a negative charge will be formed and atoms are the smallest units of elements, choose the best answer.
Answer:
negative