Question

Ecology Exam number: 700038RF Exam Guidelines Exam Instructions Question 1 of 20: Select the best answer for the question. PERIODIC TABLE OF THE ELEMENTS No Mg. Zn Ga GeAs Se Br Ru Rh Pd Ag Cs B Fr R La Ce r Nd Sm Eu Gd Tb Dy Ho Er TmYbu Ac Th PeU 1. What atom is a noble gas in group 18, row 4? ○A.Kr O C. Ne O D. Ar The Nature of Science, the Chemistry of Life and Ecology Exam number: 700038RF Exam Guidelines Exam Instructions Question 3 of 20: Select the best answer for the question 3. What will occur when the carrying capacity for humans is met? O A. Diseases will increase. O B. The population will increase. ° C. Natural disasters will increase. D. The death rate will decrease. and Ecology Exam number: 700038RP Exam Guidelines Exam Instructions Question 5 of 20: Select the best answer for the question 5. Which of the following is a sustainable practice? O A. Using only geothermal energy B. Flushing medicine down the toilet O C. Leaving trash bags at a local park O D. Throwing jars in the trash can and Ecology Exam number: 700038RR Exam Guidelines Exam Instructions Question 6 of 20: Select the best answer for the question. 6. What type of population density dependence focuses on abiotic factors? O A. K-level density dependence O B. R-level density dependence ° C. Density-dependent O D. Density-independent Question 7 of 20 Select the best answer for the question. 7. What happens when a scientific theory is shown to be an accurate description of a phenomenon? O A. It's accepted by all in the scientific community and no further testing is conducted O B. It's put in science textbooks so that students can learn about that theory with the expectation that it won't change. ° C. It's made a scientific law. O D. It's tested by other scientists to replicate the experiment and confirm the findings. Question 8 of 20: Select the best answer for the question. 8. If an ecologist is looking at how many individual organisms live within a certain population, he or she is studying the population O A. range. O B. density. O C. interactions. O D. dynamics. Exam Guidelines Exam Instructions Question 11 of 20: Select the best answer for the question. 11. When does a population experience logistic growth? O A. When there's primary succession O B. When it has access to unlimited resources ° C. When it reaches the carrying capacity O D. When natural predators are introduced to the population Question 12 of 20: Select the best answer for the question. 12. Scientists are studying diversity of disease prevalence in golden retrievers. What type of diversity are they studying? O A. Genetic O B. Species ° C. Biotic O D. Ecosystem Question 13 of 20: Select the best answer for the question. 13. A zebra mussel is discovered in a lake in Pennsylvania for the first time. Why would this make an ecologist worried? O A. Zebra mussels are vulnerable to many predators in that lake. O B. Zebra mussels need to live in hot- water environments. O C. Zebra mussels are an invasive species that can completely disrupt an ecosystem O D. Zebra mussels need to live in salt- water environments and it will hurt the organism. Question 14 of 20 Select the best answer for the question. The main biomes in the world Ocean Ice sheet and pelar desertMixed and deciduous forest Savann Desert Tundra Taiga Steppe Montane (alpine tundra and montane forest 14. In North America, what is the largest biome present? O A. Savanna O B. Tundra O C. Steppe D. Taig:a Question 17 of 20: Select the best answer for the question. 17. A worm is living inside a cow and stealing nutrients from the cow's body, causing the cow to become malnourished. What type of symbiotic relationship is this? O A. Two or more organisms looking for the same resource O B. Organisms from different species looking for the same resource O C. Adults outcompeting offspring for resources O D. Organisms from the same species looking for the same resource Question 18 of 20: Select the best answer for the question. 18. Jeremy is conducting an experiment and has just made an educated guess as to what will happen in the experiment. Which step of the scientific method is this? O A. Analyzing data O B. Stating the problem C. ldentifying variables O D. Making a hypothesis Question 20 of 20: Select the best answer for the question. 20. How does a renewable resource differ from a nonrenewable resource? O A. A nonrenewable resource is being used faster than it can be made. B. A nonrenewable resource is in limited amounts that can't be recreated. C. A renewable resource can be used only in developed countries. O D. A renewable resource doesn't depend on abiotic factors for energy.

Answer 1

• a) Kr is present in group 18 and row 4 in the periodic table.
• c) Carrying capacity id the maximum number of individuals that can be accommodated. therefore, below the carrying capacity, the population keeps on increasing however, once the carrying capacity is reached the population starts to decrease.
• a) using geothermal energy which the energy that is obtained from heat of the earth is clean as well as sustainable energy.
• d) density independent factors the one that re not affected by the population. they depend on several abiotic factors like weather, fire etc