a_____that tells you how you will be graded on an assignment or assessment is called a_____

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• Which is the best way to tell your partner that you are not ready to be sexually intimate select one of the options below as your answer: a. say that you are worried about what your friends will think of you. b. say that you are not ready and hope that he or she will respect that. c. say that if he or she pressures you too much, you will break off the relationship.?
• The main autotrophs in terrestrial ecosystems are
• You are conducting an experiment to determine if increased ultraviolet radiation from the decrease in the ozone layer is killing off frog tadpoles. After examining all of the data available in the library, you decide to go with a hypothesis that increased ultraviolet radiation from the sun is killing off the tadpoles. You design an experiment with a control and an experimental group. Group 1 involves 100 tadpoles in a five gallon container of water, which is covered by glass (knowing that the glass will filter out the ultraviolet radiation). Group 2 will be set up exactly like group 1, except that instead of being covered with glass, it is covered with an acrylic plexiglass, which will not filter out the U.V. radiation. You then place the groups outside for a period of a month, and observe the results. Results Group 1 Group 2 Number of tadpoles 100 100 started with Number finished 96 96 Using this information, answer the following questions. a. What is the experimental variable and what is the dependant variable? b. Does the information from this experiment support the hypothesis? c. If no, then what might be causing the decrease in frog populations? d. Which is the control group, and which is the experimental group? e. What is the difference between the two groups? Should they be different in any other way?
• The binding of a neurotransmitter on a postsynaptic cell allows potassium ions to diffuse out of the cell. this would result in a ____________ which is an ___________event.
• Explain why photosynthesis is important for building the structure of plant cells. I really need help on this, please.
• It's believed that 4% of children have a gene that may be linked to juvenile diabetes. Researchers hoping to track 20 of these children for several years test 732 newborns for the presence of this gene. What's the probability that they find enough subjects for their study?
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• The difference between osmosis and diffusion is that osmosis is the spreading of water from a high to low concentration while diffusion is the spreading of molecules or particles from a high to low concentration.