Examine the seedless vascular plants from lab today. Draw a representative observation of a stem and/or leaves from each group, as well as any evidence of sexual reproduction (i. e., spore production), if present. Describe how you used your observations to determine that your specimen is a lycophyte, horsetail, or fern (i. e., what features from your drawing allow you to differentiate between these three groups

How many chromosomes are in a gold fish?

80 points pls brainliest 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?

Fredrick griffith made a scientific discovery in 1928