Which of the following statements is true?

only some organs contain cells.

all cells contain at least one tissue.

organs are made up of cells and tissues.

tissues are made up of organs and cells.

Which best explains why an iceberg floats?

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth