Which unit measures mass? a: meter b: kilogram c: pound d: meter/second

As , plants meet their needs for making food from air, soil, water, and the sun's energy in a process called there are plants called grow high in trees without here are words to put in the blanks. 1.) producers 2.) consumers 3.) chloroplasts 4.) epiphytes

Ineed the answer to question 1 , i’m desperate

This is the number of complete movements of a wave per second.