Explain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.

q17

Ammonia, urea, and uric acid are all equally toxic. are all produced by the kidney. all require large amounts of water for excretion. all require about the same amount of energy to produce. are all nitrogenous wastes.

Tertiary carnivores like lions can eat other carnivores. Group of answer choices True False

Barnacles are crustaceans that live in the ocean. Barnacle larvae are motile and secrete a sticky substance that allows them to attach to a suitable substrate. As they mature into sedentary adults, they secrete layers of calcium carbonate that serve as a protective covering. Some barnacles have been known to attach to the sides of whales. This benefits the barnacles in that they are constantly transported to locations with new sources of food. The whales neither benefit nor are harmed by the presence of barnacles. Barnacles follow r selection strategies. How would the interaction between barnacles and whales be described?    a) Commensalism b) Competition c) Mutualism d) Parasitism

Endothermic animals maintain their body temperature by increasing metabolic heat production in cool environments. Which food chain loses the most energy to cellular metabolism? algae → mosquito → spider → snake algae → mosquito → spider → bat algae → mosquito → bat → weasel algae → mosquito → bat

Does the data in the graph support internal temperature regulation or external temperature regulation by the goldfish?

Air temperature has a clear influence on the metabolic rate of eastern skunk cabbage (Symplocarpus foetidus). Draw a graph of this relationship with temperature.

Which of the following is a trade-off that comes from using endothermy?     Lower possible stamina     Lower possible speed     Increased energetic cost     Decreased foraging opportunities

The yellow perch is a fish found in freshwater lakes. It is a generalist predator, consuming a variety of prey species, including crayfish, small fish, insect larvae and snails. You examine the predation rate of yellow perch on snails, and obtain the following data. Identify the type of functional response, and a plausible reason for why it has that type of response. 60- 40- 20- Perch Predation Rate