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While the cold, harsh climate of the taiga means that there is less diversity in taiga biome plant and animal life than in more temperate biomes, plants such as conifers and animals such as wolves and caribou have adapted to…
Despite the name, the wetland plants called sawgrasses, which belong to the genus Cladium, are not grasses at all but sedges. Sedges superficially resemble grasses with their slender, stalked growth and long, spear-shaped leaves. They differ, however, in that their…
Minnows are fish from the family Cyprinidae. Cyprinidae is the largest family of freshwater fish, and the fish themselves are on the small side, rarely exceeding 14 inches. Species of minnows vary widely, the smaller of which have a life…
It’s all about the units. Understanding the difference between molecular weight and molar mass all comes down to a difference of what is being counted and the units. Molecular weight is the mass of a molecule of a substance. It…
The largest perching bird (passerine) in the world, the common raven is also among the most arresting, combining that hefty size with a glossy, all-black suit of feathers and a deep, commanding croak. In North America, it has a close…
You calculate the density of a solid object, a liquid or a gas by measuring its volume, weighing it to determine its mass and using the formula (delta = frac{m}{V}) where ∂ is density, m is mass and V is…
Aluminum cans are everywhere. Some people collect them, like stamps or coins, while others find and recycle discarded beverage cans for the money or to protect the environment. The facts stack up: more than one million tons of aluminum containers…
When a liquid substance turns into a gas, the process is called evaporation. The evaporation of water is the driving force for the atmosphere’s water cycle. The world’s oceans, seas, lakes and rivers provide nearly 90 percent of the moisture…
Bluebirds prefer their nests facing – in order of preference – east, north, south and west, though they may choose a house that faces a different direction. Some bluebirds may even begin nest building in the birdhouse and abandon it…
A mixed fraction expresses the combination of an integer (whole number) and a fraction. For example, 3 2/3 is a mixed fraction. Squaring a number means multiplying it by itself; for example, 3^2 = 3*3 = 9. Mixed fractions are…
