1. Photosynthesis in the Earth's forests produces about half of the oxygen in the atmosphere. Photosynthesis in the Earth's oceans produces the other half of the oxygen in
the atmosphere. Why do you think so much photosynthesis occurs in the oceans? Think
about what type of organisms perform photosynthesis. (8 points)
2. The rain forests of South America are very active photosynthetic zones. Although plants
around the world use photosynthesis, these areas are more productive than other parts of
the planet.
a) About half of the forests that covered the Earth in the early 1900s have been cut down.
Discuss the impact this has on carbon dioxide levels in the atmosphere. Support your
answer.

straight or amphibians are homeothermic to thermal

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.