When does spring tide occur
a. they occur when the sun 45° angles from each other this happens once every spring
b. they occur on the date of the vernal equinox each year no matter what stage this is why they are called spring tides
c. they occur when the sun moon and earth are aligned in spite of their name these tides occur twice a year in the spring and fall .
d. they occur when the sun moon and earth are aligned in spite of their name these tides occur all your long ?

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a. precipitation b. erosion c. migration d. condensation

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen