DDT was spraved over an area of land to control a population of insects. It is believed that the pesticide interfered with birds' ability to metabolize calcium. The best explanation for how this pesticide came to affect the eggshells of the birds is that: O A Fish eaten by the birds had been directly sprayed with DDT O B. The birds were sprayed with DDT O C. Insects sprayed with DDT infested the birds' nests O D. DDT washed into local bodies of water, was passed through the food chain consisting of plankton, fish and the birds

E3

Mytilus trossulus species of mussel lives in freshwater does this still mean that the water has a higher salt concentration than the mussels' body fluids?

16 Mosquitoes pose a constant health risk in Florida. Based on the illustration above, what would be the best plan to reduce the numbers lo netehee TOn 20ob oniwollot ori lo to Sriero b of these insects? F. Develop an insecticide that kills 80 percent of the mosquito eggs before they develop. G. Develop a treatment that prevents the mosquitoes from laying any eggs. H. Plan a spraying program that targets adult mosquitoes that are vulnerable after laying eggs. I. Use an electric current to electrocute the mosquito pupae before they fully develop. Paneggsd tesrdW.nu2 erls mol niera boot

8

Mockingbirds typically lay 3 eggs.  If the mockingbird produces more than three eggs their young are often malnourished because they have so many to feed. If less than 3 eggs are produced they may not have any viable offspring.  This is an example of

Which of the following is TRUE? O none of them is correct O turtles at low temperatures become female O crocodiles at high temperature become male turtles at high temperature become male alligators at high temperature become female

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

Bengal Tigers that has its own territory let’s say it’s brings home food, a predator like another tiger or wolf as they try to steal the food but was killed by the territorial tiger. Will tiger eat that tiger or wolf instead of its food? It be waiste of engrey it did to kill it and waisting food

bars, where bar length is proportional to the value of the variable being compared. y 1: 5 a The Scienti n1 day anding Exper Time Variable A Independent Variable in 1 day Figure 1.3. Types of graphs. ing Types of I Activity 1 e in 1 day 1. Examine the global temperature data for the twentieth century in Table 1.3. he Metric Syst Je in 1 day Year Annual Global Temperature (°C) - 0.20 1900 ng Measuremei Due in 1 day - 0.18 1920 0.05 1940 Graphing Due in 1 day 1960 0.02 1980 0.10 2000 0.40 Table 1.3. Average annual global temperature for the twentieth century. 0/7 answered Variable B Dependent Variable o Trait Parameter !!