Which of the following correctly states conditions in which a weak base is mostly ionized?
1. ph is greater than pkb
2. pkb is less than the ph
3. more than 0.5 equivalents of oh-is added to the solution
4. ph is less than pkb

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

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.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.