Unit Test — Unit test Answers

According to the theory of global warming, the average temperature of Earth’s air began rising rapidly when humans first started burning fuels such as oil. Burning these fuels releases carbon dioxide into the air. Scientists have observed that carbon dioxide traps heat from the Sun in Earth’s atmosphere. They have also observed ice melting in some areas.

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From the outside, a whale’s flippers appear to be flat, solid objects. However, when scientists observed the bones within whale flippers they found bones like the ones shown in the diagram.

Examine the diagram of a cell.

Four students collected data for the length of an object.Student 1Student 2Student 3Student 45.55.67.88.1 Which statement correctly describes the students’ data?

According to cell theory, which are made of cells? Check all that apply.

Which scientist most likely studied tadpole cells under a microscope?

Which organelle can make food using sunlight?

A scientist is using a microscope to observe a type of bacteria.Which two structures would the scientist most likely see?

This chart shows four atoms, labeled W, X, Y, and Z. These atoms can combine with each other to form molecules.

Which order shows the levels of organization from largest to smallest?

There are 25 elements found in living things. How many of these elements are found in some organisms but not all?

Which structures do plant cells have for making food that animal cells do not?