Answer the following question given this paragraph: There are three types of mechanical waves. They differ in how they travel through a medium. The three types are transverse, longitudinal, and surface waves. All three types are described in detail below. Q: How many types of mechanical waves are there? Choices: - five - nine - one - three A:
three
Answer the following question given this paragraph: Figure 17.17 Adrenal Glands Both adrenal glands sit atop the kidneys and are composed of an outer cortex and an inner medulla, all surrounded by a connective tissue capsule. The cortex can be subdivided into additional zones, all of which produce different types of hormones. LM 204. (Micrograph provided by the Regents of University of Michigan Medical School ©️ 2012). Q: Which glands sit atop the kidneys and are composed of an outer cortex and an inner medulla, all surrounded by a connective tissue capsule? Choices: - gonads - salivary - thyroid glands - adrenal A:
adrenal
Q: Answer the following question given this paragraph: All the atoms of a given element have the same number of protons in their nucleus, but they may have different numbers of neutrons. Atoms of the same element with different numbers of neutrons are called isotopes. Many elements have one or more isotopes that are radioactive. These isotopes are called radioisotopes . Their nuclei are unstable, so they break down, or decay, and emit radiation. Q: All the atoms of a given element have the same number of what in their nucleus, though they may have different numbers of neutrons? Choices: - molecules - electrons - compounds - protons A:
A: protons
Question: Answer the following question given this paragraph: Evolution is a change in the characteristics of living things over time. Evolution occurs by a process called natural selection. In natural selection, some living things produce more offspring than others, so they pass more genes to the next generation than others do. Over many generations, this can lead to major changes in the characteristics of living things. Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. Q: The change in the characteristics of living things over time is known as _________ Choices: - spontaneous mutation - variation - generation - evolution A:
Answer: evolution
*Question*
Answer the following question given this paragraph: The Dust Bowl taught people that soil could be lost by plowing and growing crops. This led to the development of new ways of farming that help protect the soil. Some of the methods are described in Figure below . Q: What historical event taught people that soil could be lost by plowing and growing crops and encouraged new methods to prevent erosion? Choices: - the debris bowl - the flow bowl - the land bowl - the dust bowl A:
**Answer**
the dust bowl
*Question*
Answer the following question given this paragraph: As a cell prepares to divide, its DNA first forms one or more structures called chromosomes. A chromosome consists of DNA and protein molecules coiled into a definite shape. Chromosomes are circular in prokaryotes and rodlike in eukaryotes. You can see an example of a human chromosome in Figure below . The rest of the time, DNA looks like a tangled mass of strings. In this form, it would be very difficult to copy and divide. Q: What structure is made from dna and protein molecules coiled together? Choices: - bacterium - enzymes - atoms - chromosome A:
**Answer**
chromosome