What do we call the area of

an atom where electrons are

located?

A. Nucleus

B. Electron cloud

C. Mitochondria

How do frogs and birds compete in a community

Which product of fermentation causes bread to rise? question 3 options: 1) alcohol 2) water 3) lactate 4) carbon dioxide?

What is the variable being tested in this experiment? Francis is conducting an experiment to determine whether the acidity of ocean water affects the growth of ocean plants. He has 10 aquariums, each containing the same species of ocean plant.

In the human body, carbon dioxide reduces the amount of oxygen that can be transported to cells. Breathing into much carbon dioxide would most likely result in the production of

Put the four stages of growth in order. First: Second: Third: Fourth: a. Germination b. Death c. Maturation d. Growth

Which factor best explains why classification systems change over time? A. changing environments lead to reclassification B. increased plant species leads to reclassification C. changes in food sources leads to reclassification D.

Approximately how many miles is 1 kilometer equal to? On a scale (1:24 000

What is the main functions of lipids?

The rate at which materials enter and leave the cell depends on the cells A. volume B. weight C. speciation D. surface area

Why did reporter bob woodward become interested in what appeared to be a routine burglary?