Ijust need someone to check my answer

which characteristic is shared by all arthropods?

all arthropods have six legs.

all arthropods live on land.

all arthropods have exoskeletons.

all arthropods are insects.

enzyme speed up the reactions

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.