Stella wants to test the hypothesis “if carbon dioxide levels increase, the growth rate of sunflowers will increase.” she places five young sunflower plants into similar containers and sets up pumps that release different amounts of carbon dioxide into each container. she plans to measure the daily height of the plants for two weeks and graph the data. which additional considerations would produce the most reliable experimental results? she should also provide mist to each of the plants to keep the air moist and fertilize the plants. she should record her data in a bar graph for easy analysis. she should increase her sample size to 50 plants and place them all in the same area. the plants receiving less co2 should be given a little more water. she should be sure to give all the flowers the same amount of water. she should make observations twice a day for four weeks for better results. she should place one flower in a similar container, but not pump carbon dioxide into it. she should also give each plant the same amount of water.
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Biology, 22.06.2019 00:20, ayoismeisjjjjuan
6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?
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Biology, 22.06.2019 11:00, suewignall
Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2
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Biology, 22.06.2019 12:00, luv4appleallday
The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.
Answers: 1
Biology, 22.06.2019 16:30, robbinsjeffrey271
Which of the following cognitive skills have not been displayed by animals? a. using tools b. forming concepts c. transmitting culture d. using syntax
Answers: 1
Stella wants to test the hypothesis “if carbon dioxide levels increase, the growth rate of sunflower...
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