What objects use concave lenses? Concave lenses are used in a variety of technical and scientific products. Binoculars and Telescopes. Glasses. Cameras. Flashlights. Lasers. Peepholes. Is concave lens used in telescope? A telescope can also be made with a concave mirror as its first element or objective, since a concave mirror acts like a convex […]

What kind of microscope is used to see dust mites? 2 to . 3 millimeters in size, and the human eye can only see objects that are at least 20 mm in size. As explained above, the best way to see a dust mite is to use a microscope offers at least 10x magnification. What […]

What are the factors that affect our environment? Environmental factors include temperature, food, pollutants, population density, sound, light, and parasites. The diversity of environmental stresses that have been shown to cause an increase in asymmetry is probably not exclusive; many other kinds of stress might provide similar effects. What environmental factors mean? An environmental factor, […]

Which muscle tissue is responsible for voluntary movement? skeletal muscles Which tissue type is responsible for movement? Muscle tissue Which of the following tissues are responsible for involuntary contractions? Cardiac muscle tissue What are the three types of muscle tissue and their functions? Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart […]

What is radioactivity and when does it occur? As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it “wants” to give up some energy in order to shift to a more stable configuration. How do you know if an […]

How did lizards adapt to their environment? Lizards use burrows, or underground holes, as a means of adapting to the desert heat. They descend into these burrows to escape the heat. They may use the burrow as a temporary shelter during the heat of the day or as a long-term survival technique. Lizards create their […]

Why are synapses important? Synapses connect neurons in the brain to neurons in the rest of the body and from those neurons to the muscles. Synapses are also important within the brain, and play a vital role in the process of memory formation, for example. What is synaptic signaling? Synaptic signaling is similar to paracrine […]

What determines the coded information contained within DNA? DNA structure DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines […]

Is a theory an explanation of observable facts and phenomena? A theory is an explanation of observable facts and phenomena. What must models and theories do in order to remain valid? What must models and theories do in order to remain valid? 1: Explain all known facts. 2: Enable scientists to make correct predictions. The […]

Which of the following skinfold sites is used to measure body fat in females? Skinfold calipers—A tool for measuring skinfold thickness, which can then be used to estimate body fat. A three-site skinfold is commonly done and includes the chest, abdomen, and thigh on men and triceps, suprailiac, and thigh on women (figure 11.1). What […]