What are the effects of climate change on ecosystems? Ecosystem perturbations driven by climate change have direct human impacts, including reduced water supply and quality, the loss of iconic species and landscapes, distorted rhythms of nature, and the potential for extreme events to overwhelm the regulating services of ecosystems. How can humans change ecosystems? Humans […]
What are the two main categories of matter?
What are the two main categories of matter? Classifying Matter Matter can be classified into several categories. Two broad categories are mixtures and pure substances. A pure substance has a constant composition. What can elements and compounds have in common? On first glance, elements and compounds might appear different, yet they share many similarities, like […]
Can a plane fly through a storm?
Can a plane fly through a storm? All planes are designed to fly through storms and have to comply with safety regulations. A rainstorm is unlikely to cause damage to the aircraft. The only danger of flying through a rainstorm is the risk of freezing rain, but in this case, your plane will most likely […]
Why you should not sleep with your cell phone at night?
Why you should not sleep with your cell phone at night? The blue light from the screen suppresses melatonin The blue light that your smart phone emits is not only bad for your vision, but it’s bad for your brain too. Dr. Walia says that research has found a correlation between suppressed levels of melatonin […]
What are 5 things that your body uses to keep germs out?
What are 5 things that your body uses to keep germs out? Five Things You Can Do To Prevent Infection Clean Your Hands. Use soap and warm water. Make sure health care providers clean their hands or wear gloves. Cover your mouth and nose. If you are sick, avoid close contact with others. Get shots […]
Why do scientists believe the Abert and Kaibab squirrels are examples of speciation?
Why do scientists believe the Abert and Kaibab squirrels are examples of speciation? Explain why scientists believe the Abert’s and Kaibab squirrels are examples of speciation. -The Kaibab Squirrel gives us one nice example of evolution occurring due to geographic isolation. One population of squirrels had become two separate populations that could no longer interbreed, […]
Why is Congress so powerful?
Why is Congress so powerful? Why is US Congress so Powerful? 1) It is independent from the executive branch of government and cannot be controlled by it. Congress can and does ignore or over-rule presidential policies. 2) It controls the purse-strings, a particular function of the House of Representatives. Which branch of government is the […]
Are pencils magnetic?
Are pencils magnetic? Pencils are commonly made from non-magnetic materials; the shaft is usually made of wood or wood-like substitutes, with non-metallic paint, the core (commonly called the lead) is – despite the name – made from powdered graphite with a clay binder; no metal whatsoever, the eraser is made of rubber or plastic (if […]
What are the 7 types of caves?
What are the 7 types of caves? Types of Caves Ice Caves. Ice caves are further classified into two types that are pretty much unrelated to each other. Sea Caves. Sea caves are among the most visually stunning sites that exist on earth. Solution Caves. Lava Caves. Eolian Caves or Wind Caves. Sandstone Caves or […]
Why do birds sunbathe with their beaks open?
Why do birds sunbathe with their beaks open? The ‘preen-oil’ that this gland produces helps to keep the feathers flexible and hygienic. It has been suggested that the sun affects the preen-oil in the feathers in some beneficial manner, or that it helps to synthesize the Vitamin D from the preen-oil. This preen-oil also aids […]