Answer:
WHERE
Explanation:
WHERE or HAVING clause of sql statements are used to filter the records based on some filter condition. where is used with regular select statement.
Having is used in case of grouping data. when you want to check some condition on groups of data then you can go for HAVING.it is used with group by clause
Answer:
radio frequencies can penetrate deeply into the material and thus heat thick products. They heat more slowly than microwaves and thus make it possible to treat more delicate products which require a slower heating.