Biology, 02.08.2019 09:30 datands

Why is permanent immunity to the flu impossible to acquire?

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Biology, 21.06.2019 19:30, granthazenp5e9mj

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

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Biology, 22.06.2019 01:30, milkshakegrande101

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

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Biology, 22.06.2019 04:30, kaciewelkerouwdfa

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

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Biology, 22.06.2019 05:30, laddy6433

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?