Answer the following question given this paragraph: Scientists perform experiments to test their hypotheses because sometimes the nature of natural universe is not obvious. Q: Scientists perform experiments to test their hypotheses because sometimes the nature of natural universe is what? Choices: - become obvious - very obvious - this obvious - not obvious A:
not obvious
Answer the following question given this paragraph: Recall that the cell membrane is semipermeable. It does not allow everything to pass through. Some molecules can pass easily through your cell membranes, while others have more difficulty. Sometimes molecules need the help of special transport proteins to move across the cell membrane. Some molecules even need an input of energy to help get them across the cell membrane. The movement of molecules across a membrane without the input of energy is known as passive transport . When energy (ATP) is needed, the movement is known as active transport . Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration. Q: What do you call the movement of molecules across a membrane without the input of energy? Choices: - obvious transport - reactive transport - active transport - passive transport A:
passive transport
Q: Answer the following question given this paragraph: 20.3 | Terrestrial Biomes By the end of this section, you will be able to: Identify the two major abiotic factors that determine the type of terrestrial biome in an area Recognize distinguishing characteristics of each of the eight major terrestrial biomes Earth's biomes can be either terrestrial or aquatic. Terrestrial biomes are based on land, while aquatic biomes include both ocean and freshwater biomes. The eight major terrestrial biomes on Earth are each distinguished by characteristic temperatures and amount of precipitation. Annual totals and fluctuations of precipitation affect the kinds of vegetation and animal life that can exist in broad geographical regions. Temperature variation on a daily and seasonal basis is also important for predicting the geographic distribution of a biome. Since a biome is defined by climate, the same biome can occur in geographically distinct areas with similar climates (Figure 20.18). There are also large areas on Antarctica, Greenland, and in mountain ranges that are covered by permanent glaciers and support very little life. Strictly speaking, these are not considered biomes and in addition to extremes of cold, they are also often deserts with very low precipitation. Q: Terrestrial and aquatic are the two basic categories of what, on earth? Choices: - substrates - atmospheres - dendrites - biomes A:
A: biomes
Question: Answer the following question given this paragraph: The process in which rocks or other solids change to liquids is called melting. Melting occurs when particles of a solid absorb enough energy to partly overcome the force of attraction holding them together. This allows them to move out of their fixed positions and slip over one another. Melting, like other changes of state, is a physical change in matter, so it doesn't change the chemical makeup or chemical properties of matter. Q: At what temperature does solid water melt to a liquid? Choices: - below 32 degrees c - below 0 degrees c - above 32 degrees c - at temperatures above 0 degrees c A:
Answer: at temperatures above 0 degrees c
*Question*
Answer the following question given this paragraph: They live mutualistically with other organisms. Mutualistic fungi live harmlessly with other living organisms. Recall that mutualism is an interaction between individuals of two different species, in which both individuals benefit. Q: Mutualism is an interaction between individuals of two different species that has what effect on both of them? Choices: - neutral - harmful - abnormal - beneficial A:
**Answer**
beneficial
(Question)
Answer the following question given this paragraph: Kidneys: The Main Osmoregulatory Organ The kidneys, illustrated in Figure 41.4, are a pair of bean-shaped structures that are located just below and posterior to the liver in the peritoneal cavity. The adrenal glands sit on top of each kidney and are also called the suprarenal glands. Kidneys filter blood and purify it. All the blood in the human body is filtered many times a day by the kidneys; these organs use up almost 25 percent of the oxygen absorbed through the lungs to perform this function. Oxygen allows the kidney cells to efficiently manufacture chemical energy in the form of ATP through aerobic respiration. The filtrate coming out of the kidneys is called urine. Q: The kidneys are a pair of bean-shaped structures that are located just below and posterior to the liver in this? Choices: - stomach cavity - cerebral cavity - mantle cavity - peritoneal cavity A:
(Answer)
peritoneal cavity