Underline the dependent variable and bold the independent variable for each.
1. the height of bean plants depends on the amount of water they recieve.
2. the higher the temerature of the air in the oven, the faster a cake will bake.
3. lemon trees receiving the most water produced the most lemons
4. an investigation found that more bushels of potatoes were produced when the soil was fertalized more.
5. the amount of pollution produces by cars was measured for cars using gasoline containing different amounts of lead.

1. The height of bean plants depends on the amount of water they recieve

2. The higher the temerature of the air in the oven, the faster a cake will bake.

3. Lemon trees receiving the most water produced the most lemons

4. An investigation found that more bushels of potatoes were produced when the soil was fertalized more.

5. The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

i think the answer is b.