OC454325

The older a surface, the more impacts it has experienced: typically strike planets at 10+ km/s. The study of these motions, large or small, is called s

Chapter 4: the sun: brighter than about 85% of the other stars in our milky way galaxy, there is not really a surface" to the sun; made of gas that bec

Two (earth and mars) have satellites and two do not: further away from the sun are 4 very large planets we term the jovian planets or the gas giants (j

Not a pleasant climate: mercury"s atmosphere contains tiny traces of sodium, potassium, calcium, and magnesium. This very sparse atmosphere is more pro

Chapter 2 - time and space: light-year the distance light travels in one year; 300,000 km per second; 9. 4608 1012 km per year, measuring light years.

The true self cannot be known in perception or thought. Knowledge is the enemy of meaning, than we should avoid knowledge. It is impossible to stop kno

Aquinas: rejects anslem"s premise that we may conceive of god or have god in mind, we cannot know something in nite when we ourselves are nite. P1 ever

Soil not usable, less organic matter, not fertile. Agricultural land used to feed livestock, not ppl. Rate that you can use a resource w/o degradation.

Tropical forests = 6% of global land, used to be 12% Decreasing the most compared to boreal and temperate. Largest tropical rainforest in brazil, 40% o

Old growth- not disturbed by humans or natural disaster (22%) Second-growth forests- have been disturbed in some way (63%) Indicators-> you can see sky

Over 1billion people with problems due to malnutrition. Over 1billion people with problems due to over nutrition. Chemicals produced during the war use

300part per million max for co2 over past 400,000 years. 1912 was the rst time in 420,000 years we went over 300 parts per million. Increase was not th

70% lower precipitation, evaporation is higher than the norm. You"re increasing the surface area of water, therefore more water loss. Physically changi

Pest: entirely subjective, unwanted organism that interferes with human activities. Pesticide kill or control pests until they do not interfere with yi

In ltration ---> movement of water from top of soil, into the soil. Movement through soil, pools in open body of water. Evaporates and returns to atmos

Environment- all biotic and abiotic factors that act on an organism, population, or ecological community- connectivity of everything. Complex- don"t un

Well developed a horizon, due to season change. Needles don"t break down, not same input as deciduous forest. Very little organic matter being put into

Reduce number of issues that can be dealt with. Many countries ----> citizens live day to day. Sustainable development generations to meet their own ne

Be able to identify steps of cultural eutrophication . We forget about it because there isn"t an open access point, out of sight out of. Everything we

Life would not be possible w/o the greenhouse effect! Solar radiation hits earth, re ected back into atmosphere. Some is released, but some remains tra

Good ozone is good b/c in stratosphere, protects from uv rays. Just as important as detritivores in recycling nutrients. Nitrogen, oxygen, water vapour

Focus on learning to a focus on exhibition and schooling. Pg 27 - the will to know, the desire to take hold of the world took a little bit of a differe