Moth using proboscis to get food from flower
Not only bees pollinate flowers. Moths have a specialized mouth structure called a proboscis that is used to extract nectar and pollinate the flower. The moth benefits by getting food and the flower benefits by being pollinated.
Food Webs: Frogs
Frogs eat insects, and frogs are in turn eaten by larger animals such as birds. Frogs hibernate, or more correctly, they estivate. During estivation, frogs lowers their body temperatures in cold weather and go into a kind of dormancy. Frogs can "migrate" in that they move across land to find ponds and water sources.
Model Prison Architecture
Williamsburg's jail, or gaol, set the standard for colonial prison architecture. Visit the building this year as we celebrate the 75th anniversary of its reconstruction. Architectural historian Carl Lounsbury describes the structure.Author(s):
Seasonal Changes: Park City, Utah
Landsat 7 views Park City, Utah, as it goes through the seasonal changes.
Op het einde van deze les kun je inhoudelijke vragen beantwoorden na het beluisteren van een fragment over de Blitz tijdens WO II in Groot-Brittannië.
BOSS Harvester Bone Grafting Device
The Johns Hopkins Center for Bioengineering Innovation in the department for Biomedical Engineering at the Whiting School of Engineering hosts its annual Design Day to showcase student research.
TWC9: Imagine Cup, Azure deploy in 30s, MVC Roadmap, VS & ALM Feedback This week on Channel 9, Dan and Brian discuss the week's top developer news, including:
This week on Channel 9, Dan and Brian discuss the week's top developer news, including:
Kinetic and Potential Energy of Atoms
Kinetic and potential energy of atoms result from the motion of electrons. When electrons are excited they move to a higher energy orbital farther away from the atom. The further the orbital is from the nucleus, the higher the potential energy of an electron at that energy level. When the electron returns to a low energy state, it releases the potential energy in the form of kinetic energy. (02:25)
Trees provide many animals, including humans, with food. Coconuts are just one of the several nuts and fruits that trees produce that are edible.
Tempo and mode in macroevolution Fall 2007
General Biology - Fall 2007. This is a general introduction to plant development, form, and function; population genetics, ecology, and evolution. Intended for students majoring in the biological sciences, but open to all qualified students. In general at the end of Biology 1B students will be able to: describe the scientific method and explain how it would be applied to a novel problem; explain the consequences of random variation when extrapolated over time; distinguish between positive and
Obama, Republicans spar over debt plan
July 15 - President Obama and Republicans trade demands for a serious deficit plan, underscoring the lack of progress plaguing negotiations to avert a looming government default. Jon Decker reports.