Answer the following question given this paragraph: Figure 14.11 Vinegar is a solution of acetic acid, a weak acid. (credit: modification of work by "HomeSpot HQ"/Flickr). Q: Vinegar is a solution of which acid? Choices: - boric - magnesium - crystalline - acetic A:
acetic
(Question)
Answer the following question given this paragraph: An ecosystem is a group of living things and their environment. The word ecosystem is short for "ecological system. " Like any system, an ecosystem is a group of parts that work together. You can see examples of ecosystems in Figure below . The forest pictured is a big ecosystem. Besides trees, what living things do you think are part of the forest ecosystem? The dead tree stump in the same forest is a small ecosystem. It includes plants, mosses, and fungi. It also includes insects and worms. Q: A group of living things and their environment is called what? Choices: - community - population - biome - ecosystem A:
(Answer)
ecosystem
Ques: Answer the following question given this paragraph: A circuit must be closed for electric devices such as light bulbs to work. The arrows in the diagram show the direction in which electrons flow through the circuit. The current is considered to flow in the opposite direction. Q: A circuit must be what in order for electric devices such as light bulbs to work? Choices: - open - down - cyclical - closed A:
Ans: closed
(Q).
Answer the following question given this paragraph: Spermatogenesis produces four haploid sperm cells, while oogenesis produces one mature ovum. Q: While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what? Choices: - egg - semen - datum - ovum A:
(A).
ovum
Ques:Answer the following question given this paragraph: Most groundwater does not flow out of an aquifer as a spring or geyser. So to use the water that's stored in an aquifer, people must go after it. How? They dig a well. A well ( Figure below ) is a hole that is dug or drilled through the ground down to an aquifer. Q: What is a hole that is dug or drilled through the ground down to an aquifer called? Choices: - moat - ditch - canal - well A:

Ans:well
Answer the following question given this paragraph: Living things need nonliving matter as well as energy. What do you think matter is used for? It's used to build bodies. It's also needed to carry out the processes of life. Any nonliving matter that living things need is called a nutrient . Carbon and nitrogen are examples of nutrients. Unlike energy, matter is recycled in ecosystems. In the figure below, you can see how ( Figure below ). Q: Unlike energy, what happens to matter in ecosystems? Choices: - it is filtered - it does not exist - it is destroyed - it is recycled A:
it is recycled