Answer the following question given this paragraph: Carbon behaves as a metal because it conducts heat and electricity well. It is a nonmetal because it is black and brittle and cannot be made into sheets or wires. Q: Carbon behaves as a metal because it conducts which two things well? Choices: - heat and magnetism - heat and water - electricity and oxygen - heat and electricity A:
heat and electricity
Answer the following question given this paragraph: As the tectonic plates move above a hot spot, they form a chain of volcanoes. The islands of Hawaii formed over a hot spot in the middle of the Pacific plate. The Hawaii hot spot has been active for tens of millions of years. The volcanoes of the Hawaiian Islands formed at this hot spot. Older volcanoes that formed at the hot spot have eroded below sea level. These are called the Emperor Seamounts. Q: What forms when tectonic plates move above a hot spot? Choices: - earthquake chain - volcanic system - volcanic setting - volcanic chain A:
volcanic chain
Q: Answer the following question given this paragraph: Red Blood Cells Red blood cells, or erythrocytes (erythro- = "red"; -cyte = "cell"), are specialized cells that circulate through the body delivering oxygen to cells; they are formed from stem cells in the bone marrow. In mammals, red blood cells are small biconcave cells that at maturity do not contain a nucleus or mitochondria and are only 78 m in size. In birds and nonavian reptiles, a nucleus is still maintained in red blood cells. The red coloring of blood comes from the iron-containing protein hemoglobin, illustrated in Figure 40.6a. The principal job of this protein is to carry oxygen, but it also transports carbon dioxide as well. Hemoglobin is packed into red blood cells at a rate of about 250 million molecules of hemoglobin per cell. Each hemoglobin molecule binds four oxygen molecules so that each red blood cell carries one billion molecules of oxygen. There are approximately 25 trillion red blood cells in the five liters of blood in the human body, which could carry up to 25 sextillion (25 1021) molecules of oxygen in the body at any time. In mammals, the lack of organelles in erythrocytes leaves more room for the hemoglobin molecules, and the lack of mitochondria also prevents use of the oxygen for metabolic respiration. Only mammals have anucleated red blood cells, and some mammals (camels, for instance) even have nucleated red blood cells. The advantage of nucleated red blood cells is that these cells can undergo mitosis. Anucleated red blood cells metabolize anaerobically (without oxygen), making use of a primitive metabolic pathway to produce ATP and increase the efficiency of oxygen transport. Not all organisms use hemoglobin as the method of oxygen transport. Invertebrates that utilize hemolymph rather than blood use different pigments to bind to the oxygen. These pigments use copper or iron to the oxygen. Invertebrates have a variety of other respiratory pigments. Hemocyanin, a blue-green, copper-containing protein, illustrated in Figure 40.6b is found in mollusks, crustaceans, and... Q: What is the common term for erythrocytesare, specialized cells that circulate delivering oxygen to cells and are formed from stem cells in the bone marrow? Choices: - plateletes - white blood cells - monocytes - red blood cells A:
A: red blood cells
Question: Answer the following question given this paragraph: A worldwide vaccination campaign by the World Health Organization led to the eradication of smallpox in 1979. Smallpox is a contagious disease unique to humans and is caused by two Variola viruses. The eradication of smallpox was possible because humans are the only carriers of the virus. To this day, smallpox is the only human infectious disease to have been completely eradicated from nature. Scientists are hoping to eradicate polio next. Q: What disease unique to humans and is caused by two variola viruses? Choices: - AIDS - diabetes - ebola - smallpox A:
Answer: smallpox
*Question*
Answer the following question given this paragraph: Mudflows or lahars, which are volcanic mudflows, are mass movements that contain a lot of water. Q: What is the term for volcanic mudflows? Choices: - plumes - rivers - cones - lahars A:
**Answer**
lahars
*Question*
Answer the following question given this paragraph: Evolution that occurs over a short period of time is known as microevolution . It might take place in just a couple of generations. This scale of evolution occurs at the level of the population. The Grants observed evolution at this scale in populations of Darwin's finches. Beak size in finch populations changed in just two years because of a serious drought. Q: Evolution that occurs over a short period of time is known as what? Choices: - short term evolution - pseudoevolution - relatedness - microevolution A:
**Answer**
microevolution