Stem cells have the capacity to regenerate, and some can even regenerate into almost any type of cell. stem cell research is a
relatively new science that can be used to recreate organs such as livers or that would give many terminally ill people a chance to
survive. what is one disadvantage of stem cell research?
a.)the long-term effects of stem cells are completely unknown.
b.)invasive surgery is required to extract organs grown with stem cells.
c.)we cannot control which organs stem cells will develop into
d.)stem cells have no practical application to regenerative medicine.

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?