Of 48 cars taking road worthiness test, each of them had at least one fault in brakes, lights and steering. 14 had faults in brakes only, 7 brakes and steering, 3 steering and lights only, 10 brakes and lights. 4 had faults in brakes, steering and lights. The number of cars that failed because of faults in steering only equalled the number of cars that failed due to lights only.
a. Illustrate the information on a Venn diagram.
b. How many cars had faulty lights?
c. How many cars had only one fault?
a. The Venn diagram for this information looks like this:
[](https://i.imgur.com/hm30h5d.png)
b. To find the number of cars that had faulty lights, we can add up the numbers in the "lights" circle:
10 + 3 + 4 = 17
So 17 cars had faulty lights.
c. To find the number of cars that had only one fault, we need to add up the numbers in each of the circles that represent only one fault:
Brakes only: 14
Steering only: 7 (because this is equal to the number of cars that failed due to lights only)
Lights only: 3
So there were a total of 14 + 7 + 3 = 24 cars that had only one fault.
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Which of the following best describes coevolution?
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1 point
The process of two unrelated species evolving in the same way over time
The process of one species evolving to become dependent on another species for survival
The process of two or more species evolving in response to each other over time
The process of two species evolving to compete with each other for resources
The best description of coevolution is: The process of two or more species evolving in response to each other over time.
A student is analyzing the following data to compare the relationship between wading bird's nests and rainfall rates. She finds the following information:
-Wading birds feed primarily on fish
-Fewer nests are observed in dry years than in wet years
What inference could you make about the relationship between wading bird's reproductive success and the water depth in the Everglades?
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1 point
Water depth does not affect wading birds’ access to food and thus does not affect wading birds’ reproductive success.ion 1
Water depth likely affects wading birds’ access to food and thus affects wading birds’ reproductive success.
Water depth does not affect wading birds’ access to food but does affect wading birds’ reproductive success.
Water depth likely affects wading birds’ access to food, but this does not affect wading birds’ reproductive success.
The inference that can be made is: Water depth likely affects wading birds’ access to food and thus affects wading birds’ reproductive success.
Ants and elephants both live in groups instead of by themselves. They each live in groups for survival, but for different reasons.
Which would accurately explain the reason they live in groups as they do?
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1 point
Elephants use grouping for better chance of mating, and ants use grouping for better access to food.
Ants use grouping for better chance of mating, and elephants use grouping for better access to food.
Ants use grouping for cooperation, and elephants use grouping for protection of the young.
Elephants use grouping for cooperation, and ants use grouping for protection of the young.
The explanation that accurately describes the reason why they live in groups is:
Ants use grouping for cooperation, and elephants use grouping for protection of the young.
What do all flowering and non-flowering plants have in common?
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1 point
They both produce pollen.
They are all able to reproduce by asexual reproduction.
They both posess the necessary structures for sexual reproduction
They both produce spores.