In the scenarios below, describe errors in the experimental designs and how those errors can be corrected. Scenario 5 Perfumes and Bees' Behavior: Jack read that certain perfume esters would agitate bees. Because perfume formulas are secret, he decided to determine whether the unknown Ester X was present in four different perfumes by observing the bee's behavior. He placed four saucers, each containing 10 mL of a different perfume, in a semicircle 3 m from the hive entrance. He recorded the time required for the bees to emerge and made observations on their behavior. Jack repeated the experiment every hour for five hours. All repetitions were conducted on the same day as the weather conditions changed from cool and humid in the morning to hot and dry in the afternoon.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Many plants can reproduce asexually. which of these is an example of asexual reproduction in a plant? a. pine cones forming on a tree b. cross-pollination in a tomato c. roots sprouting from a potato d. night-blooming jasmine flowers

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.