PLEASE HELP DUE AT 4 ASAP GOD BLESS

Four types of motile cells in human body?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.