You are a forensic scientist. for today, your supervisor tells you to perform a confirmatory test for semen on item d. you recover item d from the evidence locker. item d is a vaginal swab from a sexual assault kit. an ap spot test has already been performed on the swab, with a positive result. you cut off a small portion of the swab. you agitate the swab in a small tube with water. you smear this water onto a microscope slide and stain the slide with red dye and green dye. you look for sperm cells under a microscope, but do not observe any sperm cells. explain.

Me 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?