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Describe two problems a plant might encounter during reproduction

One example is seen with peach and apple growers in Texas.  After the trees have had adequate exposure to low temperatures, the trees will break dormancy and bloom when there is an adequate period of warmer temperatures.  Ofter after the flowers open, pollinated with fruits beginning to develop, a strong cold front comes far enough south to freeze the blossoms or developing fruits.  Growers can use water sprayers to protect the blossoms and fruits with a layer of ice.  Or they can use portable heaters among the trees to try to keep the temperatures high enough to protect the crop.

Another can be the lack of pollinators due to die off of bee colonies.  Companies will allow the grower to rent the colonies for the blooming period of the plants.  The grower gets good pollination and production of fruit while the apiary gets paid cash and with honey produced by the bees.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high