Ecosystem Observations The soccer field is mowed weekly. Ant hills were present and two mockingbirds 1.Soccer field on campus were seen gathering food from the field. No other animals were present. 2.Drainage ditch near the Crayfish and tadpoles were seen swimming in the ditch. A large bird flew into road the ditch and was looking for food. Field corn is the only crop growing in the field, but a skunk was spotted, along with many different species of insects and small birds. No large predators were 3.Agricultural field seen. 4.Wooded park with a stream that runs through it Small fish, crayfish, tadpoles, insects, turtles, and ducks were all seen in the park. A deer was spotted in the distance. Although no birds were seen, they could be heard chirping in the trees. Based on these observations, which ecosystem is likely the most sustainable over time?​

In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence:

Which feature of a human community is similar to a niche in a biological community

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.