Answer the following question given this paragraph: If an atom gains electrons, it becomes an ion. Is the ion positively or negatively charged? Explain your answer. Q: If an atom gains electrons, it becomes what? Choices: - anion - a cation - neutral - an ion A:
an ion
Answer the following question given this paragraph: Neptune is very cold and has very strong winds. It had a large dark spot that disappeared. Another dark spot appeared on another part of the planet. These dark spots are storms in Neptune's atmosphere. Q: The planet neptune has strange dark spots that sometimes appear on its surface? what are these spots? Choices: - seas - earthquakes - black holes - storms A:
storms
Q: Answer the following question given this paragraph: Periosteum is a tough, fibrous membrane that covers and protects the outer surfaces of bone. Q: What is the name of a tough, fibrous membrane which protects the outer layer of bone? Choices: - cartilage - marrow - the epithelium - the periosteum A:
A: the periosteum
Question: Answer the following question given this paragraph: Types of Biodiversity Scientists generally accept that the term biodiversity describes the number and kinds of species in a location or on the planet. Species can be difficult to define, but most biologists still feel comfortable with the concept and are able to identify and count eukaryotic species in most contexts. Biologists have also identified alternate measures of biodiversity, some of which are important for planning how to preserve biodiversity. Genetic diversity is one of those alternate concepts. Genetic diversity or variation is the raw material for adaptation in a species. A species' future potential for adaptation depends on the genetic diversity held in the genomes of the individuals in populations that make up the species. The same is true for higher taxonomic categories. A genus with very different types of species will have more genetic diversity than a genus with species that look alike and have similar ecologies. If there were a choice between one of these genera of species being preserved, the one with the greatest potential for subsequent. Q: What term describes the number and kinds of species in a location or on the planet? Choices: - habitat - Allopatric speciation - ecosystem - biodiversity A:
Answer: biodiversity
*Question*
Answer the following question given this paragraph: Almost 5 million people die each year because of air pollution. In fact, polluted air causes more deaths than traffic accidents. Air pollution harms the respiratory and circulatory systems. Both outdoor and indoor air can be polluted. Q: Nearly how many millions of people die yearly due to air pollution? Choices: - two million - fifty million - eight million - five million A:
**Answer**
five million
*Question*
Answer the following question given this paragraph: Structures like the human tail bone and whale pelvis are called vestigial structures . Evolution has reduced their size because the structures are no longer used. The human appendix is another example of a vestigial structure. It is a tiny remnant of a once-larger organ. In a distant ancestor, it was needed to digest food. It serves no purpose in humans today. Why do you think structures that are no longer used shrink in size? Why might a full-sized, unused structure reduce an organism's fitness?. Q: Structures like the human tail bone and whale pelvis are called what? Choices: - primordial structures - parasitic structures - adaptations - vestigial structures A:
**Answer**
vestigial structures