Answer: to mix and aerate soil, remove weeds, and in general create the perfect seedbed for many plants with less physical labor than using a manual tool like a spade.
meaning: aerate
introduce air into (a material)
Answer:
To prepare a proper seed bed.
Hope this helps!
External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.
what is your big questions
88
Explanation:
operant conditioning
