The first type of true cells to form on Earth

What is oxygen made of?

Why food webs are more useful?

Which of the following is a segmented animal with an exoskeleton and jointed appendages? A: Mollusks B: Segmented Worms C: Cnidarians D: Arthropods

What is the arc length of a circle that has an 8-inch radius and a central angle that is 95 degrees? Use 3.14 for π and round your answer to the nearest hundredth.

How dose the body make protein?

The gametophyte is the dominant stage of the life cycle in both mosses and ferns. in both mosses and ferns, moisture is required for sperm to reach the egg.

Dogs are an example of A common ancestor Selective breeding The natural pace of evolution Extinction rates rising

Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?

The original regimen known as Pasteurization consisted of: 1. Heat at 100 degrees F for 60 minutes 2. Heat at 98.6 F for 30 minutes 3. Freeze at negative 32 degrees C for one hour following dessication 4. Heat at 62.8 degrees C for 30 minutes

Seedless plants can be vascular or non-vascular. True or False