Where can electrical signals that cause the heart to beat originate from

Where is the urine stored before micturition from the body?

Plants and algae are often referred to as producers. What exactly do they produce?

What type of muscle is responsible for peristalsis?

Why An Underground Mine Might Be Better For Local Ecosystem Than A Surface Mine?

The transport system that moves ribosomes around the cell throughout the cytoplasm

Which did a large earthquake in Alaska initally cause? which did a large earthquake in Alaska initally cause? A. a volcanic eruption B. flooding C. a landslide D. a tornado

What type of asteroid/meteorite do they believe brought some water to the Earth? a. Stoney Iron b. Iron c. Steel d. Carbonaceous Chondrite

If a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis and cytokinesis? and can u explain because i dont understand

A lab technician runs the results of a simple PCR reaction through a gel electrophoresis to test a sample of imported hamburger meat for the presence of a DNA sequence that is known to be found in kangaroos and not in cows.

If Earth was not titted on its axis, what changes would you expect to see in the seasons?