Dimitri Mendeleev created the first? * Periodic Table
Chemical Reaction
Semiconductor
Particle Accelerator

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?