Class Notes (836,580)
Canada (509,856)
Geography (975)
GGR107H1 (52)
all (3)

Lecture3 - Oct 5:12.doc

2 Pages
Unlock Document

All Professors

Environment, Food, and People 3 (and some of 4) October 5th, 2012 UnderstandingAgri-Ecosystems CONSTRAINTS ONAGRICULTURE: 1. temperature - plants generally have a difficult time surviving in cold climates 2. access to solar energy for photosynthesis (photo period, shading) • both above relate to Earth’s orbital position ◦ example: in the arctic there isn't much sunlight - Image #2: The Carbon Cycle- key aspects are the relationship between organisms and photosynthesis (essentially the photosynthesis keeps us alive: we eat plants which uses the suns energy to live, we eat animals that eat plants which went through this process as well) 1. water- Image #3 assessed a picture of the water cycle: • we only have the water that already exists on Earth • water never leaves the cycle • the quality of water depends on which part of the cycle its in (example: we cannot drink ocean water because salt water will kill us) 2. soil characteristics- a process in which organic material is integrated into the disintegrating rock. Image #4: soil process chart illustrating the transition from bedrock to organic slightly decomposed material • the deeper you go, the tougher the ground is; the soil on top is the most nutrient ◦ disturbance in soil (such as building a house) makes it not fertile and it becomes difficult for people to enrich their lawns Soil Formation: - the one inch of soil takes approximately 500 years (much variation!) - underlying rock id broken down through physical, chemical, or biological weathering • Factors: climate, organisms, topographical relief, parent material, time. ◦ Soil Texture Image #5: how can you tell if soil is good? ■ moisture, colour, texture, material (smell) • SoilAcidity: some plants such as blueberries and rice prefer grow in high acidic soil (this is an adaptation over time they have adapted to the environments they ge
More Less

Related notes for GGR107H1

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.