Sophia - Environmental Science - Unit 2 Challenge 3.

Sophia - Environmental Science - Unit 2 Challenge 3. 1 — Photosynthesis and the Carbon Cycle Determine how carbon is cycled between plants and animals. How is carbon cycled between plants and animals? • a.) Dying organisms consume oil and coal. • b.) An animal eats a plant, then absorbs and exhales the carbon, which is then absorbed by other plants during photosynthesis. • c.) Plants use oxygen combined with sugar, to create water and carbon in order to grow. • d.) Plants release carbon in the form of a gas called carbon dioxide. 2 — Water and Nitrogen Cycles Recognize key aspects of the nitrogen cycle. __________ is an atmospheric gas that is an important biological compound, but it must be fixed to be usable by life forms. Microorganisms that can do this are housed in the __________ of certain plants, such as clover and peanuts. • a.) Carbon dioxide; seeds • b.) Nitrogen; roots • c.) Nitrogen; stems • d.) Carbon dioxide; leaves 3 — The Role of Individual Species Differentiate between the intrinsic value of a species and the value for the ecosystem services it provides. Species can be valued for their ecosystem services or intrinsic value. Which of the following statements values species for their intrinsic value? • a.) An elementary school class takes a field trip to a pond to study its frog population. • b.) Chickens should not have to live their lives trapped in a cage. • c.) Paula volunteered to help plant trees in her city to help regulate air quality. • d.) Alberto uses alpaca wool to knit sweaters because customers demand its quality. 4 — Conservation Biology & Restoration Ecology Identify key aspects of conservation biology and restoration ecology. Which of the following is the main goal of restoration ecology? • a.) Determine ways to address habitat needs of the species with minimal human involvement • b.) Determine ways to conserve biodiversity