Monday, May 24, 2010
Mon-Day 2
Bio - Practice for Thursday's unit exam by taking the PRACTICE TESTS that I posted on Blackboard- answer keys are provided for quick feedback.
Check Blackboard for a template/sample of how to do your upcoming review book homework (starting Thursday night) i.e. follow the directions and apply the test-taking skills that we have been discussing throughout this entire course. Your homework grade will be based mostly on your work shown (as seen in the template).
We discussed some of the negative impacts of human activities on ecosystems such as the extinctions caused by overhunting and exploitation of animals, the destruction of forests and the habitats that the forests provide, and poor farming practices such as mono-cropping and overgrazing (leads to soil erosion).
by over-hunting and over-fishing, humans have caused the extinction of various species: the dodo-bird, the QUAGGA, one of Africa's most famous extinct animals, was a subspecies of the plains zebra, which was once found in great numbers in South Africa's Cape Province and the southern part of the Orange Free State. It was distinguished from other zebras by having the usual vivid marks on the front part of the body only. The Tasmanian Tiger was hunted to extinction in 1936. The sea cow grew up to 7.9 meters (25.9 ft) long and weighed up to three tons, much larger than the manatee but is now extinct.By burning fossil fuels, carbon dioxide concentration in the atmosphere increases and can contribute to the greenhouse effect. Also oxides of sulfur and nitrogen, from burning coal and other fuels, can react with water in the air to form acids, which produce acid rain that changes the abiotic factor, pH, of aquatic biomes. This can upset a stable ecosystem.We discussed various ways that humans can negatively impact ecosystems. From deforestation, which reduces the producer/autotroph level of organisms and can cause ecosystem instability, to monoculture farming, the planting of a single type of crop that can deplete the nutrient-rich layer of topsoil of the same essential nutrients so that the soil becomes less and less fertile for plants, we gave several examples of some of the negative effects that humans can and do cause.
We discussed some of the positive impacts that human societies have tried to produce on various ecosystems via laws and intelligent ecological practices.
Better awareness of these negative human impacts can lead to legislation that decreases these disturbances.
AP Chem - we learned how to calibrate a pH probe to set up our Ksp lab.
Check Blackboard for a template/sample of how to do your upcoming review book homework (starting Thursday night) i.e. follow the directions and apply the test-taking skills that we have been discussing throughout this entire course. Your homework grade will be based mostly on your work shown (as seen in the template).
We discussed some of the negative impacts of human activities on ecosystems such as the extinctions caused by overhunting and exploitation of animals, the destruction of forests and the habitats that the forests provide, and poor farming practices such as mono-cropping and overgrazing (leads to soil erosion).
by over-hunting and over-fishing, humans have caused the extinction of various species: the dodo-bird, the QUAGGA, one of Africa's most famous extinct animals, was a subspecies of the plains zebra, which was once found in great numbers in South Africa's Cape Province and the southern part of the Orange Free State. It was distinguished from other zebras by having the usual vivid marks on the front part of the body only. The Tasmanian Tiger was hunted to extinction in 1936. The sea cow grew up to 7.9 meters (25.9 ft) long and weighed up to three tons, much larger than the manatee but is now extinct.By burning fossil fuels, carbon dioxide concentration in the atmosphere increases and can contribute to the greenhouse effect. Also oxides of sulfur and nitrogen, from burning coal and other fuels, can react with water in the air to form acids, which produce acid rain that changes the abiotic factor, pH, of aquatic biomes. This can upset a stable ecosystem.We discussed various ways that humans can negatively impact ecosystems. From deforestation, which reduces the producer/autotroph level of organisms and can cause ecosystem instability, to monoculture farming, the planting of a single type of crop that can deplete the nutrient-rich layer of topsoil of the same essential nutrients so that the soil becomes less and less fertile for plants, we gave several examples of some of the negative effects that humans can and do cause.
We discussed some of the positive impacts that human societies have tried to produce on various ecosystems via laws and intelligent ecological practices.
Better awareness of these negative human impacts can lead to legislation that decreases these disturbances.
AP Chem - we learned how to calibrate a pH probe to set up our Ksp lab.
# posted by C @ 1:53 PM 
