Where is the central vein in a leaf

Effects of corona virus in the respiratory system and circulatory system?

Favorable adaptations are genetic characteristics that?

The U. S. Integrated Ocean Observing System (IOOS) is a government program to collect information in the Gulf of Mexico.

The chamber of the heart that endures the highest pressure is the

In the lab, I observed how convection moves Earth's plates. I also saw how plates interact with each other. When plates move apart from each other at divergent boundaries, magma from the mantle reaches Earth's surface and new crust forms.

Which of the following is a function of the nucleus? A) stores DNA B) stores sugars C) builds proteins D) packages proteins

Animals are motile because they have: a. energy b. metabolism c. nerve and muscle fibers d. legs or wings

Radiation generated by the big bang cooled and is now detectable as microwaves. t/f

What's an easy way to remember the definition of biome?

What causes lighting