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HST67/ENVS167#3-3: The Global Predominance of Agriculture-Based Empires
Lecture reviewing the long global predominance of agriculture-based empires.
The One About Fat Soluble Vitamins
In this video we talk about the fat soluble vitamins, A, D, E, and K! Check out what makes each one special, and in what foods or other sources you can find them. Fat vs. Water Soluble Vitamins - 0:56 Vitamin Functions - 2:01 Vitamin A - 2:5...
Most people know that to make maple syrup you have to do a lot of boiling. You collect the sap from the trees and you evaporator the water while concentrating the sugars. You might not know that to determine if you actually have correct density sy...
Why Does Sap Flow from Maple Trees? Throughout the maple region, there are several weeks of alternating freeze and thaw temperatures each spring. This weather provides the right conditions for sap flow in maple. Unlike most trees, maples have tiny...
Maple trees managed for sap production remain part of a forest ecosystem. Forest ecosystems are complex communities of plants, animals and microbes all interacting with their physical environment and climate. Forests are especially competitive env...
Chapt 4 Temperature Monitoring, Probe Maintanence and Calibrations
This video discusses how to maintain and calibrate temperature monitoring devices as well as defining the required accuracy of thermometers.