Explain what would happen to the air temperature at Riverdale School over the course of the day if the groundwater system were used. Use the terms stability and
change in your explanation.

Sentence frame:
If the groundwater system
were used the...

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

the answer is b.) hydrogen bonds between bases.