Answer the following question given this paragraph: Goosebumps. Mammals raise their hair with tiny muscles in the skin. Even humans automatically contract these muscles when they are cold. They cause "goosebumps," as shown here. Q: What is the layman's term for mammals raising their hair with tiny muscles in the skin, something that is automatic in humans sensing cold? Choices: - spine tingling - follicles - hypothermia - goosebumps A:
goosebumps
Answer the following question given this paragraph: Gametogenesis may differ between males and females. Male gametes are called sperm . Female gametes are called eggs . In human males, for example, the process that produces mature sperm cells is called spermatogenesis . During this process, sperm cells grow a tail and gain the ability to "swim," like the human sperm cell shown in Figure below . In human females, the process that produces mature eggs is called oogenesis . Just one egg is produced from the four haploid cells that result from meiosis. The single egg is a very large cell, as you can see from the human egg in Figure below . Q: What are the male gametes called? Choices: - cytoplasm - pollen - urea - sperm A:
sperm
Q: Answer the following question given this paragraph: Another major cause of extinction is global warming , which is also known as global climate change. During the past century, the Earth's average temperature has risen by almost 1C (about 1.3F). You may not think that is significant, but to organisms that live in the wild and are constantly adapting to their environments, any climate change can be hazardous. Recall that burning fossil fuels releases gasses into the atmosphere that warm the Earth. Our increased use of fossil fuels, such as coal and oil, is changing the Earth's climate. Any long-term change in the climate can destroy the habitat of a species. Even a brief change in climate may be too stressful for an organism to survive. For example, if the seas increase in temperature, even briefly, it may be too warm for certain types of fish to reproduce. Q: Another major cause of extinction is global warming , which is also known as? Choices: - sudden climate change - rapid climate change - regional climate change - global climate change A:
A: global climate change
Question: Answer the following question given this paragraph: When charged particles accelerate , changing electric and magnetic fields radiate outward. The traveling electric and magnetic fields of an accelerating (often oscillating) charged particle are known as electromagnetic radiation or light. Q: Changing electric and mnagnetic fields radiate outward when? Choices: - particles lose their charge - particles multiply - firing particles accelerate - charged particles accelerate A:
Answer: charged particles accelerate
*Question*
Answer the following question given this paragraph: Most of the elements we know about do not exist freely in nature. Sodium cannot be found by itself (unless we prepare it in the laboratory) because it interacts easily with other materials. On the other hand, the element helium does not interact with other elements to any extent. We can isolate helium from natural gas during the process of drilling for oil. Q: Sodium is an example of what sort of thing that cannot exist by itself in nature? Choices: - concept - compound - aspect - element A:
**Answer**
element
(Q).
Answer the following question given this paragraph: The adductor muscle that closes the jaw is composed of two muscles in mammals: the temporalis and the masseter. These allow side-to-side movement of the jaw, making chewing possible, which is unique to mammals. Most mammals have heterodont teeth, meaning that they have different types and shapes of teeth rather than just one type and shape of tooth. Most mammals are diphyodonts, meaning that they have two sets of teeth in their lifetime: deciduous or "baby" teeth, and permanent teeth. Other vertebrates are polyphyodonts, that is, their teeth are replaced throughout their entire life. Mammals, like birds, possess a four-chambered heart. Mammals also have a specialized group of cardiac fibers located in the walls of their right atrium called the sinoatrial node, or pacemaker, which determines the rate at which the heart beats. Mammalian erythrocytes (red blood cells) do not have nuclei, whereas the erythrocytes of other vertebrates are nucleated. The kidneys of mammals have a portion of the nephron called the loop of Henle or nephritic loop, which allows mammals to produce urine with a high concentration of solutes, higher than that of the blood. Mammals lack a renal portal system, which is a system of veins that moves blood from the hind or lower limbs and region of the tail to the kidneys. Renal portal systems are present in all other vertebrates except jawless fishes. A urinary bladder is present in all mammals. Mammalian brains have certain characteristics that differ from other vertebrates. In some, but not all mammals, the cerebral cortex, the outermost part of the cerebrum, is highly folded, allowing for a greater surface area than is possible with a smooth cortex. The optic lobes, located in the midbrain, are divided into two parts in mammals, whereas other vertebrates. Q: A unique characteristic of mammals is the ability to chew, this happens by the temporalis and the masseter allowing what? Choices: - Up and down - Bakward and forward - Grinding - side-to-side movement A:
(A).
side-to-side movement