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Basal species in a food web feed on other species.
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- In herbivory, an individual of one species eats part ofa plant or other primary producer, such as a cariboueating a lichenPhytoplankton is an aquatic autotroph. Describe its role in the food web. refer to pictureCrab Sea Slug Algae on Eelgrass Eelgrass Figure 1. Partial food chain in eelgrass habitats 1. Sea otters are native to the western coast of North America. Between 1750 and 1850, hunting had reduced the population from hundreds of thousands to only one thousand individuals. In the early 1900s, a small population of sea otters was discovered in Elkhorn Slough, an estuary in central California near a large human population center. The otters were then protected by the international fur seal treaty, which banned sea otter hunting. The sea otter population has rebounded to nearly three thousand individuals today. Otters live in kelp forests and eelgrass beds and feed on crabs and shellfish (Figure 1). Most herbivores in the habitat eat algae that grows on the eelgrass and not the eelgrass itself. If there is too much algae, the eelgrass does not receive enough light for photosynthesis. As the otter population has increased, the eelgrass habitat has increased. Recently, however, scientists…
- Which factor sets the lower limit of Balanus' realized range in the intertidal zone? O Ability to withstand dessication Interspecific competition PredationBased on the text on roaches eating: 1. Identify abiotic factors that support the survival and reproduction of roaches and explain why they need this factors 2. Identify biotic factors that support the survival and reproduction of the roaches and explain why they need this factors 3. Predict what factors in the environment can be altered to decrease the survival and reproduction of roaches and why? PLEASE ANSWER ALL QUESTION BASED ON THE TEXTInformation about your decomposer/detritivore- Earthworm How does it obtain energy: What obtains energy from it: What is its geographical range: What are the environmental threats to its survival:
- The main source of food in muddy-bottom intertidal communities is plankton True FalseBiology The food web of the harp seal is most dependent on which of the following organisms?. 1. Polar bear 2. Phytoplankton 3. Atlantic cod 4. None of theseHow does it obtain energy: What obtains energy from it: What is its geographical range: What are the environmental threats to its survival:
- Red alage contribute in producing coral reef. Give reason.would an ecosystem be able to survive without the consumers and the decomposers and its ditritus feedersUse the passage to answer the questions. Sea Otter Which of the following statements best describes the sea otter's role in its This image shows a sea otter in a kelp forest. Sea otters live along habitat? the coasts of the Pacific Northwest in kelp forests and feed primarily O A. Sea otters are the dominant species because they have more on sea urchins and other crustaceans. Kelp forests are highly biomass than sea urchins. diverse ecosystems and provide nursery habitat, food, and shelter for various marine mammals, fish, and invertebrate species. A simplified food chain is provided below: B. Sea otters are a keystone species that keep sea urchin populations from destroying the kelp. Sea otter Sea urchin Kelp C. Sea urchins are ecosystem engineers because they plant new kelp. O D. Sea urchins have a negligible effect on kelp forests because they are few in number compared with other species. ed MacBook Air 4) II F1 F10 888 F4 F1 F2 F3 # $ % & * @ 4 6 7 8 9 2 3 Y P W E F G H K S < C V…