Biology, 02.11.2020 20:30, brinjay430
Some poinsettia plants have green leaves that turn red. A garden club
decided to study the color change of poinsettia plants. Knowing that
poinsettias change color during the short daylight periods of winter, they
decided to investigate the effect of different daylight lengths on color
change.
Design a controlled experiment using three experimental groups that
could be used to determine if the number of hours of daylight has an
effect
on the color change of poinsettias. In your experimental design, be
sure to:
• state one hypothesis the experiment would test
• state one way the three experimental groups would differ
identify two factors that must be kept the same in all three groups
• identify the dependent variable in the experiment
• describe experimental results that would support your hypothesis
.
Answers: 2
Biology, 22.06.2019 17:00, karmaxnagisa20
An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil
Answers: 2
Biology, 22.06.2019 17:30, keke6361
Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.
Answers: 3
Biology, 22.06.2019 18:00, rbrummitt6922
Does all the energy stored by the phytoplankton reach the top level of the pyramid
Answers: 1
Some poinsettia plants have green leaves that turn red. A garden club
decided to study the color ch...
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