Q: Because it damages hair cells, what is the most cause of hearing loss in adults? Read this paragraph and choose the correct option from the provided answers: Most adults experience at least some hearing loss as they get older. The most common cause is exposure to loud sounds, which damage hair cells. The louder a sound is, the less exposure is needed for damage to occur. Even a single brief exposure to a sound louder than 115 decibels can cause hearing loss. Figure below shows the relationship between loudness, exposure time, and hearing loss. Choices: - bacteria - ear wax - water in the ears - exposure to noise A:
exposure to noise

Q: What are the primary cells of adaptive immune response? Read this paragraph and choose the correct option from the provided answers: Lymphocytes: B Cells, T Cells, Plasma Cells, and Natural Killer Cells As stated above, lymphocytes are the primary cells of adaptive immune responses (Table 21.1). The two basic types of lymphocytes, B cells and T cells, are identical morphologically with a large central nucleus surrounded by a thin layer of cytoplasm. They are distinguished from each other by their surface protein markers as well as by the molecules they secrete. While B cells mature in red bone marrow and T cells mature in the thymus, they both initially develop from bone marrow. T cells migrate from bone marrow to the thymus gland where they further mature. B cells and T cells are found in many parts of the body, circulating in the bloodstream and lymph, and residing in secondary lymphoid organs, including the spleen and lymph nodes, which will be described later in this section. The human body contains approximately 10 12 lymphocytes. Choices: - erythrocytes - red blood cells - white blood cells - lymphocytes A:
lymphocytes

Q: Q: When resources become limiting, populations follow a logistic growth curve in which the size will level off at a point called what? Read this paragraph and choose the correct option from the provided answers: 19.2 Population Growth and Regulation Populations with unlimited resources grow exponentiallywith an accelerating growth rate. When resources become limiting, populations follow a logistic growth curve in which population size will level off at the carrying capacity. Populations are regulated by a variety of density-dependent and density-independent factors. Life-history characteristics, such as age at first reproduction or numbers of offspring, are characteristics that evolve in populations just as anatomy or behavior can evolve over time. The model of r- and K-selection suggests that characters, and possibly suites of characters, may evolve adaptations to population stability near the carrying capacity (K-selection) or rapid population growth and collapse (r-selection). Species will exhibit adaptations somewhere on a continuum between these two extremes. Choices: - believed capacity - full capacity - containing capacity - carrying capacity A:
A: carrying capacity

Question: Q: What are 2 common growth patterns of population? Read this paragraph and choose the correct option from the provided answers: Populations may show different patterns of growth. The growth pattern depends partly on the conditions under which a population lives. Two common growth patterns are exponential growth and logistic growth. Both are represented in Figure below . Choices: - migratory and logistic - exponential and economical - organic and inorganic - exponential and logistic A:
Answer: exponential and logistic

*Question*
Q: Which body system controls all the others by sending electrical messages? Read this paragraph and choose the correct option from the provided answers: The nervous system sends electrical messages throughout the body and controls all other body systems. Choices: - the localized system - the specialized system - the endocrine system - the nervous system A:
**Answer**
the nervous system

(Q).
Q: Genetic variation helps ensure that some organisms will survive if what happens? Read this paragraph and choose the correct option from the provided answers: No physical object can travel faster than the speed of light in a vacuum. (Maximum speed is finite). Choices: - they get eaten - there's an earthquake - they die - their environment changes A:
(A).
their environment changes