What is a school of fish called? In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. In common usage, the terms are sometimes used rather loosely. How big is a school of fish? […]

What is the main bloodborne infection of concern? The pathogens of primary concern are the human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV). Can fluid from around an unborn baby be a source of bloodborne infection? Other body fluids that can contain bloodborne pathogens include: Pleural fluid: Fluid that is […]

How can competition affect an environmental resources? Increased competition makes it less favorable for individuals of a disfavored species to occupy a niche close to the maximum and reduces the selection pressure for tracking the moving resource distribution. What are environmental filters? Environmental filtering occurs when a species arrives at a site but fails to […]

Is Duchenne muscular dystrophy X-linked? DMD is inherited as an X-linked disease. X-linked genetic disorders are conditions caused by an abnormal gene on the X chromosome and manifest mostly in males. How do you know if a pedigree is autosomal or X-linked? Determine if the chart shows an autosomal or sex-linked (usually X-linked) trait. For […]

Why is it important to preserve farmland? Farmland provides food and cover for wildlife, helps control flooding, protects wetlands and watersheds and maintains air quality. In addition, new energy crops grown on farmland have the potential to replace fossil fuels. What is the national farmland protection program? The Farmland Protection Program (formerly the Farm and […]

Who are called black in South Africa Class 9? The black population consists of several groups: Khoi-San, Xhosa, Zulu, Ndebele, Sotho, Shangaan and Venda, just to name a few. The biggest groups are Zulus (21 %), Xhosas (17 %) and the Sotho (15%). Next smaller minorities are the Tswana, Venda, Ndebele, Swasi, and Pedi, among […]

Can I search a person by photo? Performing a reverse image search is quite easy. Go to images.google.com, click on the camera icon, upload the image or insert the URL for a photo, and hit search. If you are using the Chrome browser, you can right-click on a picture and then click “Search Google for […]

Which changes of state lose energy? Explanation: Atoms lose energy when they change from solid to liquid or gas and quid to gas. Which change in state requires that energy be removed from the substance? The changes that are endothermic require energy to be added to the substance. Changing ice to liquid requires energy be […]

Where are steroid receptors located? Receptors for steroid and thyroid hormones are located inside target cells, in the cytoplasm or nucleus, and function as ligand-dependent transcription factors. That is to say, the hormone-receptor complex binds to promoter regions of responsive genes and stimulate or sometimes inhibit transcription from those genes. Which hormone has receptors in […]

How does plankton help the environment? Through photosynthesis, phytoplankton use sunlight, nutrients, carbon dioxide, and water to produce oxygen and nutrients for other organisms. With 71% of the Earth covered by the ocean, phytoplankton are responsible for producing up to 50% of the oxygen we breathe. Why is plankton so important to the marine ecosystem? […]