« previous next »
« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

save our planet save our planet
Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe Evolutionary ecologists live and do research in contemporary cultures that maintain all or some aspe
Many European Americans are involved in ethnic work, attempting to maintain an identity more precise ... Many European Americans are involved in ethnic work, attempting to maintain an identity more precise ...
Files come in many different shapes and sizes. Never use a file without a handle. Files come in many different shapes and sizes. Never use a file without a handle.
Patients with celiac disease must maintain a gluten-free diet. Many gluten-free items are widely ... Patients with celiac disease must maintain a gluten-free diet. Many gluten-free items are widely ...
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library