- primary consumers would be considered which of the following
- a density independent factor that would affect population size would be
- this term describes the limit of the environments ability to support a population
- this is used to describe all the feeding relationships in a community
- what would be an example of a secondary consumer
- Describe the differences and/or similarities of natural ecosystems compared to agroecosystems in terms of diversity, inputs, management, breeding, and nutrient loss.
- 1)Compare and contrast soil particle size (sand, silt, clay) for water holding capacity, drainage, CEC, ability to store plant nutrients, shrink-swell potential, and ease of cultivation.
- 1)What is the best way to prevent more species from developing herbicide resistance?
- 1)What percentage of total cropland in Texas is organic certified? In the US?
- 1)Know how to use the soil textural triangle to classify soil by texture.
- 1)Identify the two main crops discussed in the documentary, what pests threatened them, and where were they grown.
- What can happen to an ecosystem without keystone species
- Ultimately which techniques yield best information about studying the defoliation effects of grazing?
- What effect does soil compaction have on vegetation? Roots?
- What are some direct effects of grazing on plants? Describe each.
- What are some impacts grazing animal exert on the soil and vegetation? Which impact has been studied most?
- In grasses, do stored carbohydrates or carbohydrates produced from photosynthesis provide the most energy and materials needed for growth? Explain.
- What is one factor that confounds defoliation assessments when using grazing animals to study defoliation?
- Which spends more time grazing and traveling cattle or sheep? What if available forage decreases?
- Which animal will cause more compaction, a selective feeder or a less selective feeder? Why?