Raya is a gardening enthusiast who is looking to buy a new house. she wonders whether her house plants will grow well if she buys an apartment on a higher floor. she remembers that her friend jenn also has a small garden on her balcony, and her plants seem healthy. raya conducts an experiment to study the effect of altitude on the growth of plants. she gathers plant samples and places them on five different floors of a 20-story building. identify the basic components of raya’s experiment, including the confounding variable.

Football players often sustain lateral blows to the extended knee. which of the ligaments is (are) damaged as a result? a. suprapatellar b. oblique popliteal and extracapsular ligament c. medial collateral, medial meniscus, and anterior cruciate d. arcuate popliteal and the posterior cruciate

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.

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content