HEL A weather map shows contrasting systems of low pressure and high pressure zones. Choose the arrow that shows the direction in which the wind will blow.

answer; i believe the correct answer to the above question is ( friction)

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.

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

answer; motor (efferent)neurons;