What is coring? A. the process of analyzing ocean floor sediments by drilling and extraction
B. the process of exploring ocean floor features via submersible
C. the process of distinguishing among species by taking tissue samples
D. the process of distinguishing ocean floor features using sound

When does a spring tide occur? question 9 options: 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. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.