Q: What is the the force of attraction that holds together ions? Read this paragraph and choose the correct option from the provided answers: An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Choices: - covalent bond - soluble bond - magnetic bond - ionic bond A:
ionic bond

(Question)
Q: What is the process bacteria use to break down chemicals into food? Read this paragraph and choose the correct option from the provided answers: The bacteria that make food from chemicals are also primary producers. These organisms do not do photosynthesis since there is no light at the vents. They do something called chemosynthesis. They break down chemicals to make food. Choices: - biosynthesis - gametogenesis - cellular respiration - chemosynthesis A:
(Answer)
chemosynthesis

Ques: Q: What kind of mouthparts do aphids have? Read this paragraph and choose the correct option from the provided answers: Some insects, such as aphids, have piercing-sucking mouthparts. Other insects, like grasshoppers, have chewing mouthparts. Choices: - chewing mouthparts - sponging mouthparts - siphoning mouthparts - piercing-sucking mouthparts A:
Ans: piercing-sucking mouthparts

(Q).
Q: What element is an essential part of many molecules needed by living organisms? Read this paragraph and choose the correct option from the provided answers: Nitrogen is an essential part of many molecules needed by living organisms. Choices: - helium - silicon - hydrogen - nitrogen A:
(A).
nitrogen

Ques:Q: What does the respiratory system exchange between the body and the outside air? Read this paragraph and choose the correct option from the provided answers: The job of the respiratory system is the exchange of gases between the body and the outside air. This process, called respiration , actually consists of two parts. In the first part, oxygen in the air is drawn into the body and carbon dioxide is released from the body through the respiratory tract. In the second part, the circulatory system delivers the oxygen to body cells and picks up carbon dioxide from the cells in return. The lungs are organs of the respiratory system. It is in the lungs where oxygen is transferred from the respiratory system to the circulatory system. Choices: - fluids - blood - nutrients - gases A:

Ans:gases

Ques:Q: Similar to the coil on a stove, changes in what reflect an increase in the temperature of a star? Read this paragraph and choose the correct option from the provided answers: Think about the coil of an electric stove as it heats up. The coil changes in color as its temperature rises. When you first turn on the heat, the coil looks black. The air a few inches above the coil begins to feel warm. As the coil gets hotter, it starts to glow a dull red. As it gets even hotter, it becomes a brighter red. Next it turns orange. If it gets extremely hot, it might look yellow-white, or even blue-white. Like a coil on a stove, a star's color is determined by the temperature of the star's surface. Relatively cool stars are red. Warmer stars are orange or yellow. Extremely hot stars are blue or blue-white. Choices: - texture - direction - rotation - color A:

Ans:
color