What was special about pikaia?

What were four problems factory workers often faced? Question 4 options: A) Skilled craftspeople had too much work to do. B) The work was often dangerous and harmful to the workers' health.

Gases take up a lot of space because a. they have weak chemical bonds. b. their molecules have very little attraction for one another. c. they contain very few atoms. d. they have a small molar mass.

These factors make the Danube River important to Eastern Europe. (choose all that apply) 1. It connects Central and Eastern Europe. 2. It contains large deposits of petroleum. 3. It is an important trade route. 4. It is used for transportation.

What type of data is measured by isoline maps

What happens to the log if the density of water is decreased? a. the log sinks in the water c. the log rises out of the water b. the log rises in the water d. nothing change

Why do terrestrial planets have meager atmospheres whereas the atmospheres of jovian planets are substantial?

What is the difference between weathering and erosion?

What would be a probable explanation for why there are many endemic plants and birds in new Zealand but no native animals? A. they were driven away by non native mammals B. Plants and birds would make ocean crossings to.

Pollution is the only way that humans can cause changes to ecosystems. True or false?

What is troubleshooting