Single celled organisms excrete waste by A-in the digestive system

b-diffusion

C-infusion

D-in the circulatory system

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?

Which type of landform forms at the plate boundary as a result of divergent stress

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.