2. Trees, plants and vegetables ae considered essential for mankind because it a source of:
a. food b. clothing C. Shelter d. all of the choices
3. Trees and plants can also benefit: a. mankind, as they produce oxygen b. mankind, as they can be used for furniture c. animals, as they can eat grass and trees d. animals, as they can use trees to defend themselves
4. "Agriculture" can be best described in:
a. an image of caraboo with a man plowing b. an image of a land planted with vegetables c. an image of backyard with pigs and chicken d. all of the above​