Fog is tiny water drops hovering in the air. It is like a cloud on the ground. Thick fog makes it difficult to see the surrounding landscape.
Fog forms from water vapor, which turns back into liquid, when the air cools. A gentle wind helps fog to form and to stay in the air. It is very common in valleys and near bodies of water and usually forms at night. In the morning it disappears.
Water droplets in the fog have a size of only about 0.01 mm. A thick fog contains approximately 1200 drops per cubic cm.
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Algae are living things, that are found all over the world. They make much of Earth’s oxygen. Some algae, such as seaweeds, look like plants. However, algae are actually neither plants nor animals. They belong to protists. There are about 27,000 different species of algae. They live in water, soil or on leaves, wood, stones, and even on animals.
Algae can be green, blue, red, or brown. They vary in size and do not have stems or leaves, do not produce flowers or seeds.
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Fleas are insects that live as parasites on birds and mammals, including humans. They depend on the animal they live on for food. Fleas bite the animal and feed on its blood. They can spread diseases. There are about 1,600 species of flea. The largest individual is only about 1 centimeter long. Fleas are excellent jumpers.
A flea has four stages of life: egg, larva, pupa, and adult. A female flea can lay more than 20 eggs every day. Adult fleas live for a few weeks to about a year.
Fleas commonly spend a great deal of time off their hosts, for example, in vegetation or on the ground. They can generally survive for a long time without feeding.
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Beans are excellent source of protein and are used in many dishes. The scientific family includes peas, peanuts, lentils and beans.
Beans come in many different shapes, sizes, and colors. They can be white, green, yellow, tan, pink, red, brown, purple, and black. Beans grow inside pods, which are usually 7 to 20 centimeters long.
One of the most useful beans is the soybean. Many chemical products, including paint, are made from soybean oil. They are used to make soy milk, soy sauce, and tofu.
Beans have numerous associations with various spirits. The early Aryans valued beans highly as a food offering to the dead.
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Goats are horned mammals closely related to sheep. People raise goats for their milk, hair, and meat. In many countries, people make butter, cheese and even ice cream from goat’s milk. In Spain, goats are the main source of milk.
A domestic goat usually weighs about 45 to 54 kilograms. Both male and female goats may have horns. Most males also grow beards.
Goats eat grass and shrubs.
Wild goats are animals of the mountains. Most wild goats live in herds of 5 to 20 animals. There are several types of wild goats – the ibex, the markhor, the tahr, and the goral.
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Sloths are slow-moving mammals that spend most of their lives in trees. They live in the tropical forests of Central and South America. They belong to order Edentata, which means “without teeth.” However, they have molars, chewing teeth, that have no roots and continue to grow throughout their lives. They are related to armadillos and anteaters.
Sloths can grow up to 69 centimeters long and weigh only about 4 kg. Sloths have flat faces on round heads, with round eyes, a round snout, and round nostrils. The fur is usually grayish brown or tan. They often have a greenish tint because of algae on their fur. This helps sloths to blend in with tree leaves. Their toes have long, curved claws, which the animal uses to grasp branches.
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The puma is a large cat of North and South America. It is also commonly called a mountain lion, cougar, or panther. Probably puma is the only animal on the planet which has so many names. Puma is even in the Guinness Book of Records as an animal with a large number of names. Its scientific name is Puma concolor.
Pumas can be up to 1.8 meters long, without the tail. They stand about 0.6 to 0.9 meter tall at the shoulder and weigh about 36 to 100 kilograms. They may be yellowish tan, reddish brown, bluish gray, or some other color.
They are great jumpers and can jump to heights of more than 5.5 meters.
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