Here are the responses to the questions you provided:
Question 1
A) When a consumer eats a producer, 10 percent of the producer’s energy is passed on to the consumer trophic level. What happens to the other 90 percent?
Response: It is used for cell processes or released as heat.
Question 2
A) Why is there less biomass at the top of the energy pyramid?
Response: Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Question 3 A) Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.
Algae: 135,000 Kcal (primary producer)
Shrimp: 13,500 Kcal (primary consumer)
Lantern Fish: 1,350 Kcal (secondary consumer)
Response: 1,350 Kcal
Question 4
A) Based on the statements provided, which one would most likely be classified as an invasive species, and not just a non-native species, in the United States?
Response: Species C, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees. It has no natural predators.
Question 5 A) Use the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375 Kcal). (Energy level transferred to next level) / (Total energy input) × 100
Calculation:
(375 Kcal / 2500 Kcal) × 100 = 15%
Response: 15%
Feel free to ask if you have any more questions!