In 1976, the average blood lead level was about _ ug/dL. The amount of lead used in a 6-month period in 1978
was about _ 10^3 tons.

n the United States, average BLLs measured among tens of thousands of subjects declined from 12.8 to 2.8 μg/dL between 1976 and 1991.

Explanation:

1. 16 (b)

2. 85 (c)

Explanation:

Edge

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.

pick it up and keep it back in

explanation:

so simple, yet people dont relize