Which of the following activities directly reduces land pollution?
A. Walking to a store instead of driving
B. Allowing motor oil to drain into the street
C. Using natural fertilizers rather than
chemical pesticides
D. Disposing of garbage in a landfill

A. Walking to a store instead of driving

Explanation:

Walking helps reduce land pollution because if you we're driving, you would be releasing bad gas into the air.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.