Which of the following describes a chemical change ?

a. burning paper
b. freezing water
c. bending water
d. melting ice

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome