Tag: science & technology

Watt is the SI unit of power, defined as one joule per second. Joule is the unit of energy or work, Newton measures force, and Ampere measures electric current. Power is the rate of energy transfer.

Scurvy is caused by deficiency of vitamin C (ascorbic acid). Vitamin C is essential for collagen synthesis in the body. Vitamin A deficiency causes night blindness, Vitamin B deficiency causes beriberi/pellagra, and Vitamin D deficiency causes rickets.

Flies have chemosensory receptors (taste buds) located on their feet and legs. This allows them to taste food by simply walking on it, which helps them identify suitable food sources quickly. They don't taste with their mouth, back, or stomach.

Stratocumulus clouds are low-level clouds typically found below 2,000 meters altitude. They appear as low, lumpy layers rather than high and fluffy. Altocumulus are mid-level clouds, Cirrus (not 'Cirrud') are high-level wispy clouds, and Cirrostratus are also high-level thin clouds.

The epidermis is the outermost layer of skin, providing protection against the environment. The dermis is the deeper layer containing blood vessels and nerves. Hair follicles are structures in the dermis, and hair shaft is the visible part of hair above skin.

Male bees are called drones. Drones are male honeybees that develop from unfertilized eggs and their primary purpose is to mate with the queen. Worker bees are infertile females, and Colletes and Andrena are genera of bees, not types of bees within a hive.

The resistance of a material is directly proportional to its length. This relationship comes from the formula R = ρL/A where R is resistance, ρ is resistivity, L is length, and A is cross-sectional area. As length increases, resistance increases linearly, assuming constant cross-section and material.

Paleontology is the scientific study of ancient life forms, particularly dinosaurs and other organisms that lived in prehistoric times. It involves studying fossils to understand evolution and extinct species.

The leading scientific theory for dinosaur extinction is that a massive meteorite impact 66 million years ago caused climate disruption that wiped them out. This created the Chicxulub crater and led to mass extinction.

Somatotropin (also called somatotropin) is the correct name for growth hormone, which is produced by the anterior pituitary gland and stimulates growth, cell reproduction, and regeneration. Vasopressin is an antidiuretic hormone that regulates water balance. Secretin stimulates pancreatic bicarbonate secretion. Norepinephrine is a stress hormone and neurotransmitter, not a growth factor.