Tariq watches a hummingbird hover around a petunia flower. He remembers that when two species interact with each other closely, such as hummingbirds and flowers do, they can affect one another's evolution. Which of these is an example of coevolution?

Achange in any of the following factors will cause investment spending and aggregate demand to change excepta. the interest rate effect b. expected business conditionsc. real interest rate d. expected future returns created by new technology e. expected business taxes

In a recent telephone survey, 5,000 randomly selected teenagers were asked to cite their primary social network site. six of 10 teenagers said they use mybook as their primary social network site. a 95% confidence interval to estimate the true proportion of teenagers who use mybook as their primary social network site is found to be (0.2964, 0.9036). which of the following is a correct interpretation of the confidence level? ninety-five percent of all samples of this size would yield a confidence interval of (0.2964, 0.9036). there is a 95% chance that the true proportion of teenagers who use mybook as their primary social network site is in the interval (0.2964, 0.9036). ninety-five percent of the time, the procedure used to generate this interval will capture the true proportion of teenagers who use mybook as their primary social network site. ninety-five percent of all the samples of size 5,000 lie in the confidence interval (0.2964, 0.9036).

This table shows data collected by a weather station. if these trends continue, what weather can you predict for the region for the upcoming week? day 1 day 2 day 3 temperature, upper atmosphere (ºf) 45 44 43 temperature, surface (ºf) 61 59 55 air pressure (inches of mercury) 30.00 29.96 29.50 a. fair skies, warm weather b. a blizzard c. rain storms d. a few clouds, but very cold