11

TL 4

5

6

7

sun -

grass

grasshopper-

shrew

Owl

3. Explain why this food chain is not complete.

Alice is performing an experiment to determine which mouthwash kills the most bacteria. She is testing three different mouthwashes. She uses four pieces of filter paper. Each piece of filter paper was 3 cm in diameter.

What is the shallowest part of the continental margin called?

Why do we get a crunchy granular feeling when we chew pear fruit

6. In what ways did Americans at home contribute to the war effort? * O rationing goods O working in war-related industries O buying war bonds O all of the above

In this technological age, students are faced with online educational opportunities at both the high school and post-high school levels. Many educators wonder how effective such online courses really are. Imagine you are designing an online course.

How many strands does a DNA molecule have?

The nucleus of an atom always contains one or more?

Why is it important for nitrogen to be recycled in an ecosystem?

What is the main cause of extinction on earth today?

Name four weathering is caused by