3. When (what year) were stone tools first used?

A characteristic that distinguishes most plants from animals is A. means of locomotion B. chloroplast C. symmetry D. color

How do gene interactions affect gene expression?

What effect can increased sulfur compounds from volcanic eruptions have on the environment?

In which of the following phases of matter do molecules have the lowest amount of energy? solid gas liquid gel

Assume thymine makes up 15% of the bases in a double-stranded DNA molecule. What percentage of the bases in the molecule will be represented by cytosine? Explain your answer.

Which structure is Chad drew a diagram to compare animal cells and bacterial cells. Which label belongs in the area marked X? found in some but not all plant cells?

Waves crash against the shores of an island, creating beaches and gullies. In this scenario, what is the primary landform and what is the secondary landform? A. primary landform: island, secondary landform: beach and gully B.

What is one substance that uses facilitated transport

Technology has allowed us to not only see detailed structure of organelles, but it has also allowed us to see molecular machines, carrying out highly sophisticated tasks. true false

Which ocean borders Africa on the western coast