« previous next »
« previous next »
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Elle and associates investigated the cost to Datura wrightii of producing sticky leaf trichomes. Elle and associates investigated the cost to Datura wrightii of producing sticky leaf trichomes.
Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th
The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own
A spark plug thread chaser is a low-cost tool that hopefully will not be used often, but is ... A spark plug thread chaser is a low-cost tool that hopefully will not be used often, but is ...
Research that has examined babies' ability to recognize themselves develops in the 2 year Research that has examined babies' ability to recognize themselves develops in the 2 year
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
Video: Automated external defibrillator (AED)

For a complete list of videos, visit our video library