Biology: How Life Works
3rd Edition
ISBN: 9781319017637
Author: James Morris, Daniel Hartl, Andrew Knoll, Melissa Michael, Robert Lue, Andrew Berry, Andrew Biewener, Brian Farrell, N. Michele Holbrook
Publisher: Macmillan Higher Education
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Chapter 31.5, Problem 18SAQ
Summary Introduction
On earth, there are about 400,000 species of plants are present, surprisingly we consume only a few plants. Those we eat are all
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Which of these characteristics are true for consumers?
They occupy the first level of a food web.
They provide food for all other organisms.
They make carbon dioxide available to plants.
They can synthesize their own food.
Where do majority of the food (by nutrient source) come from -crops or animal-based?
What might support or hinder access to food for various populations? How do you think these situations might impact the overall health of the different populations?
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- Which of the following describes how humans can create a sustainable practice between the meat system and the green system? a) Reducing the number of livestock to increase the number of crop farms b) Using the waste and byproducts of livestock to help create more arable land for crops c) Reducing the number of crops consumed by livestock by placing more animals in feedlots d) Using the grass and seeds that are not consumed by livestock to feed nations with food scarcityarrow_forwardWhat are primary consumers?Can food chain present quaternary consumers without having secondary or tertiary consumers?arrow_forwardWhy are there generally fewer organisms at the top of the food pyramid than at the bottom?arrow_forward
- a) List two animals which feed primarily on fluids b) List one animal that relies on symbiotic algae for nutrition c) List one animal that is a piscivore for most of its dietarrow_forwardWhich of the following is an example of a secondary consumer? a)A spider that eats herbivorous insects b)A plant that uptakes nutrients from the soil c)A cow that eats grass d)A shark that eats a tuna that eats other fisharrow_forwardList 5 ways a feedlot diet is detrimental to the health and well-being of the animals. Check www.eatwild.comarrow_forward
- How might the carrying capacity for people in the united states change if we ate more plant products than animal products?arrow_forwardWhat is the difference between the concepts of food chain and food web?arrow_forwardDistinguish the terms in the following pairs: autotrophic and heterotrophic; phototrophic and chemotrophic; herbivores and carnivores; omnivores and insectivores.arrow_forward
- Name at least two ways that buying fresh/local food lowers your ecological footprint.arrow_forwardFrom a purely ecological standpoint, can the problem of world hunger ever be overcome by improved agriculture alone? What other components must a hunger-control policy include?arrow_forwardWhat is the difference between the modernization of the agri-food system to the modernization of medicine.arrow_forward
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