« previous next »
« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Cognitive behaviour involves problem-solving ability. Cognitive behaviour involves problem-solving ability.
Abiotic factors influence population densities. Abiotic factors influence population densities.
Adaptations to the Environment Adaptations to the Environment
In some species, dominant females have more surviving offspring that mature earlier indicating an ad In some species, dominant females have more surviving offspring that mature earlier indicating an ad
The rock cycle and the Earth’s physical environment The rock cycle and the Earth’s physical environment
Theory of Plate Tectonics Theory of Plate Tectonics
Video: Genetic distance between human groups

For a complete list of videos, visit our video library