. Explain why ecosystems generally support few carnivores

Create a food web for the list of organisms given

Assuming brown eyes (B) are dominant over blue eyes (b), determine the genotypes of all the following individuals. The blue-eyed son of two brown-eyed parents marries a brown-eyed woman whose mother was brown eyed and whose father was blue eyed. Their child is blue eyed.

4. Use the diagram below to answer the questions. Bass Crayfish Small invertebrates Water plants Crabs Clams а) What do the arrows in the food web represent? b) List ONE (1) producer and TWO (2) secondary consumers in the food web.

Name any two organisms which can occupy more than one trophic level in an ecosystem.

Describe the ecological niche of humans. Do you think our realized niche has changed during the past 100 years? Why or why not?

Just answer letter B a) Describe the two basic means by which living organisms obtain energy from the environment. Identify one example of each, and explain at least one similarity and one difference in biological structure that supports these two means of dealing with energy needs.  b) Construct a diagram to show the:-direction of energy flow-type of energy flowing-release of heat-impact of the sun on energy flow-between the two classes of organisms you described above. Justify the inefficiency of this system.

The following diagram illustrates a typical marine food web. Mercury, a toxic heavy metal, can  accumulate in the fatty tissue of organisms.    Which organism would you predict to have the highest level of mercury? Explain your answer.

Use the igure below, which shows the Tood web of an aquatic ecosystem, to anSwer the following questions: Killer whale Crabeater seal Elephant seal Adelie penguin Squid Leopard seal Cod / small animals and protists Algae Use the figure below, which shows the food web of an aquatic ecosystem, to answer the following questions: CMAC 1-In the food web above, there are eight food chains that include krill. In the space provided, identify all of the organisms in the order in which they occur in three of these eight food chains Food chain 1 Food chain 2 Food chain 3 3- Identify the most energy efficient food chain for the killer whale. Food chain 3- Draw am energy pyramid for the most energy efficient food chain for the killer whale . 4 2 I 3.

Describe and give (an example) the following relationships between organisms. a) predation b) parasitism c) mutualism