The main difference between prokaryotic and eukaryotic cells is that

Which statement is a scientific claim? D A. Observations of certain stars explain why humans behave the way they do. I B. Observations of constellations show that stars have moved over time. O C.

Tides describe the regular rising and falling of the ocean water. Tides are caused by 1. the rotation of the moon on its axis 2. the gravitational pull of the sun and moon 3. large storm systems over oceans 4. earthquakes on the ocean floor

Which organisms have produced the oldest fossil evidence? A. Vertebrates B. Protists C. Bacteria D. Plants

Many different species of songbirds migrate into the United States and Canada from Central and South America each summer in order to take advantage of the caterpillars and other insects that hatch in the northern forests during the summer.

Weather maps use isobar lines to show weather conditions. Which of the following information is indicated by these lines? A: high and low-pressure areas B: high and low temp C: precipitation level D: cloud formation

Which statement correctly compares the use of bar graphs versus Circle graphs

The gases that make up earth's atmosphere are commonly referred to as air. approximately what percentage of air is made up of gases other than nitrogen and oxygen?

what forms of RNA is responsible for carrying a formed amino to the protein assembly site during translation

The human population has experienced exponential growth Sustainability is crucial. Describe what this means in terms of natural resources.

Make a stimulus-receptive model for the endocrine system and the nervous system.