15drag the tiles to the boxes to form correct pairs. carmen conducts tests on a sample of four autotrophic organisms to determine the type of photosynthetic pigment present.  match the pigments to the species in which they are present. phycobilinsea algae        reset  next  previous15  next       post test: life in the oceans  submit test  reader tools  info  save & exit© 2019 edmentum. all rights reserved.

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.