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- Discuss Concepts Modern humans emerged about 100,000 years ago. How accurate is it to state that our species has lived in the Age of Wood? Explain.9 Explain why, in a food chain, a large amount of plant material supports a smaller mass of herbivores and an even smaller mass of carnivores.1. Discuss the cellular and physiological effects of temperature change on living organisms. 2. Provide an explanation for the observed behavioral responses of fish to temperature changes. In general, what are the physiological effects of temperature changes on living organisms? 3. Provide a feasible explanation for the observed effect of salinity on % germination and growth rate in monggo seeds.
- How would loss of fungi in a forest effect biogeochemical cycles in the area? Nitrogen could no longer be fixed into organic molecules Phosphorus stores would be released for use by other organisms Sulfur release from eroding rocks would cease Carbon would accumulate in dead organic matter and waste.3. a)The leaves on a plant in your garden begin to turn yellow. From this observation alone, can. you predict which nutrient the plant lacks? Explain. b)How might the fact that plants don’t move influence their ability to adapt to climate change and other environmental changes? c)Would you expect a changing environment to benefit plants that reproduce sexually or asexually? Explain your reasoning.11. Identify the process that enables cabbage, cauliflower, broccoli, kale, kohlrabi and Brussels sprouts to be produced from a common wild mustard plant. 12. Describe the process humans took to "transform" natural variations of the common wild mustard plant into the 6 vegetables shown above.
- 11.a) The roots of legumes, such as peas and beans, have special nodules that are home to large numbers of bacteria. What benefit do these bacteria provide to the plant? What do they receive inexchange? b)Virtually all plant species have some way of protecting themselves against herbivores. Yet there exist many thriving species of herbivores across the globe. Demonstrate how these two realities can coexist. c)Compare and contrast the two types of root systems. Describe the characteristics of each.Nature Versus Nurture: Why Are Leaves fromNorthern Red Maples “Toothier” ThanLeaves from Southern Red Maples?1. An increased demand for soybeans has led to an increase in converting native forests and grasslands to fields for growing soybeans. One negative consequence of this environmental change has been ?
- Endosymbioses that lead to the evolution of euglenoids and, separately, the evolution of chlorarachniophytes were the result of the combining of: a. two ancestral nonphotosynthetic prokaryotes. b. two ancestral photosynthetic prokaryotes. c. a nonphotosynthetic eukaryote with a photosyntheticeukaryote. d. a photosynthetic prokaryote with a nonphotosyntheticeukaryote. e. mitochondria with an already established plastid.Why are fungal insecticides an attractive alternative to chemical pesticides for growing food crops? Human consumption of fungal insecticides would not make a person sick, but ingestion of chemical pesticides can be harmful to humans A single fungal insecticide would kill a wider variety of insects than a chemical pesticide Fungal insecticides can eliminate both harmful insects and plant pathogens, while chemical pesticides only kill insects Fungal insecticides will decompose dying plants, enhancing the nitrogen content of the soil, while chemical pesticides are not decomposers.6) Which of the following adaptations facilitated a more full liberation from water for reproduction in the seed plants?