Science


Refine Search

What are some examples of the competitive exclusion principle?

There are other examples of the competitive exclusion principle. This includes two species of finch found on the Galapagos Islands. It has been found the different species of finch on the islands have different size beaks. This means that they each eat different sizes of seeds so they are not competing for the same resource.Another example comes from two birds found in American forests: the nuthatch and the brown creeper. They both seek food from the same trees, but the brown creeper travels up the trunk, while the nuthatch goes down. This means that they find and eat different insects.Finally..

What is the relationship between energy and power?

A simple way of understanding the relationship between work, power and energy involves turning a bolt inside a tight nut using a wrench. Work is defined as force multiplied by the distance over which the force is acting. Each time the wrench is pushed with a certain force over a certain distance, work is performed. To turn a hypothetical bolt 90 degrees requires a certain amount of work. This work can be achieved, for example, with a long wrench moved with a small force over a long distance, or with a short wrench moved with a large force over a short distance.\nIn this example, the power equ..

What is aluminum's density?

Aluminum is a metal known for being strong, light, nontoxic, nonmagnetic and abundant. It is mined as bauxite and then purified to extract the aluminum. Its softness allows it to be easily formed into shapes. While pure aluminum is too soft, adding small amounts of other elements, such as copper, increases its strength to allow it to be useful. Aluminum is toxic to plants and may be toxic to animals in large amounts.

What is a baby kangaroo called?

According to Live Science, kangaroos are marsupials, meaning they give birth to young who are not fully developed. A newborn joey is often barely bigger than a grain of rice. The joey continues to grow inside the mother's pouch where it gains nourishment from milk and where it is sheltered and kept warm and protected for 120 to 400 days. A kangaroo grows to a height of 3 to 8 feet. Kangaroos travel together in a "mob" that ranges from 10 to over 100 kangaroos. If there is more than one male in a mob, they compete for dominance by boxing. Kangaroos are native to Australia, but they are ada..

Can you get cash for recycling batteries?

You can set up a business that recycles batteries and sell them to recycling centers, or sell working or serviceable batteries to cellphone companies. You must comply with EPA regulations governing battery disposal because batteries typically include highly toxic substances, such as acids and heavy metals. Vehicle batteries, which contain lead and acid, should never be sent to landfills; most metal recyclers buy them.

How do you find cheap laboratory supplies?

Nova-Tech sells many laboratory supplies online at competitive prices, including glassware, plasticware and racks. A 100-milliliter glass graduated low-form beaker is $2.90, as of November 2015. A 100-gram container of benchmark agarose is $88.40, while a pack of 12 plastic 50-milliliter beakers is $9.41. Nova-Tech also sells a variety of lab equipment, including balances, fume hoods, chemical metering pumps and process control systems.\nMed Lab Supply sells many lab supplies such as chemicals at relatively low prices, including 500 milliliters of propylene glycol USP for $19.25, a 50-millilit..

What is the difference between milliliters and cubic centimeters?

A liter is defined as 1 cubic decimeter. There are 10 centimeters in a decimeter. Thus, the liter is 1,000 cubic centimeters. Using the metric system's prefixes, a milliliter is then 1/1000 liter or 1 cubic centimeter. In the medical field, the cubic centimeter is the common measure of liquids, while in chemistry, the liter or milliliter are the commonly preferred units for volumes.

What is the chemical formula for Windex?

Windex was invented in the 1930s at the height of the Great Depression in the United States. It was originally used as a windshield cleaner for vehicles. Through the years, the Windex product line has diversified and presently serves a variety of purposes. Aside from using it to wipe windows and glass surfaces, Windex is also used to clean electronics and other hard surfaces in most American households. Some of these brands include Windex Outdoor All-in-One Glass Cleaning Tool, Windex Electronics and Windex Multi-Surface product lines.The original formula for Windex has been modified to make t..

What is weightlessness?

Within free fall, the mass of an object remains the same, but the weight of the object is 0. Objects on Earth fall toward the surface, and objects in an orbit fall around that gravitational source. Even astronauts in outer space are in a state of free fall around the Earth’s orbit. Some people in microgravity experience feelings of confusion, headaches, nausea, anemia and muscle cramps.

What is point pollution?

Common point sources of water pollution include factories and animal farms. Many factories release wastewater into local rivers and lakes. Some factories treat the water before discharging it, but others do not. Animal farms create point source pollution as the runoff water that travels over the farm collects pollutants. The water then carries these pollutants down to a small portion of a water body, creating an easily identifiable source for the pollution.\nThe term point source pollution may be applied to any type of pollution that has a single source. While pollution is most commonly associ..

Showing 8441 to 8450 of 10000 (1000 Pages)