Q: Answer the following question given this paragraph: A: Earth has north and south magnetic poles. The North Pole is located at about 80 degrees north latitude. The magnetic field is an area around Earth that is affected by its magnetic field. The field is strongest at the poles, and lines of magnetic force move from the north to the south magnetic pole. Q: What is located at about 80 degrees north latitude? Choices: - alaska - india - the equator - the north pole A:
A: the north pole

Q: Answer the following question given this paragraph: 45.2 Life Histories and Natural Selection All species have evolved a pattern of living, called a life history strategy, in which they partition energy for growth, maintenance, and reproduction. These patterns evolve through natural selection; they allow species to adapt to their environment to obtain the resources they need to successfully reproduce. There is an inverse relationship between fecundity and parental care. A species may reproduce early in life to ensure surviving to a reproductive age or reproduce later in life to become larger and healthier and better able to give parental care. A species may reproduce once (semelparity) or many times (iteroparity) in its life. Q: All species have evolved a pattern of living, called a life history strategy, in which they partition energy for growth, maintenance, and what? Choices: - variation - abundance - deatn - reproduction A:
A: reproduction

Q: Answer the following question given this paragraph: Permafrost is land with permanently frozen soil. Q: What is the term for land that has permanently frozen soil? Choices: - ice desert - snow-field - Arctic - permafrost A:
A: permafrost

Q: Answer the following question given this paragraph: 21.5 | The Immune Response against Pathogens By the end of this section, you will be able to: Explain the development of immunological competence Describe the mucosal immune response Discuss immune responses against bacterial, viral, fungal, and animal pathogens Describe different ways pathogens evade immune responses Now that you understand the development of mature, naive B cells and T cells, and some of their major functions, how do all of these various cells, proteins, and cytokines come together to actually resolve an infection? Ideally, the immune response will rid the body of a pathogen entirely. The adaptive immune response, with its rapid clonal expansion, is well suited to this purpose. Think of a primary infection as a race between the pathogen and the immune system. The pathogen bypasses barrier defenses and starts multiplying in the host's body. During the first 4 to 5 days, the innate immune response will partially control, but not stop, pathogen growth. As the adaptive immune response gears up, however, it will begin to clear the pathogen from the body, while at the same time becoming stronger and stronger. When following antibody responses in patients with a particular disease such as a virus, this clearance is referred to as seroconversion (sero- = "serum"). Seroconversion is the reciprocal relationship between virus levels in the blood and antibody levels. As the antibody levels rise, the virus levels decline, and this is a sign that the immune response is being at least partially effective (partially, because in many diseases, seroconversion does not necessarily mean a patient is getting well). An excellent example of this is seroconversion during HIV disease (Figure 21.26). Notice that antibodies are made early in this disease, and the increase in anti-HIV antibodies correlates with a decrease in detectable virus in the blood. Although these antibodies are an important marker for diagnosing the disease, they are not sufficient to completely clear the virus. Several years later, the... Q: What bodily system is primarily responsible for fighting pathogens in the body? Choices: - digestion - Cardiovascular - Muscular - immune A:
A: immune