Afood chain would be a better resource than a food web to answer which question?
how does energy move from an organism in one trophic level to an organism on the next trophic level?
how does energy move within a trophic level?
what preys on grasses?
how is organic matter recycled in a forest?

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.