Answer:
They should ask a question, come up with a hypothesis then a testable explanation to address this question then do the experiment do the observations and see if they are right about their hypothesis
Explanation:
These are the things a scientist should do before going at it
Answer:
Air is composed of 78 percent nitrogen
Explanation:
Sperm release <u>hyaluronidase</u> to break down the bonds between adjacent follicle cells surrounding the oocyte.
- In mammalian fertilization, the sperm cell's acrosome releases hyaluronidase after reaching the oocyte, breaking down hyaluronan in the corona radiata to enable conception.
- Sperm hyaluronidase has been linked to sperm penetration of the cumulus oophorus' extracellular matrix and may be extremely important for gamete contact and mammalian reproduction.
- The hyaluronidase enzymes on the surface of the sperm help it break through this covering when a capacitated sperm reaches the ovum.
- When this happens, the sperm might connect to the zona pellucida. Hyaluronidase breaks the egg's vitelline membrane as part of its function.
learn more about Sperm here: brainly.com/question/1154065
#SPJ4
I would say that the answer is C, since variations in crop restore the nitrogen in the soil from certain bacteria growing on the root of beans, including legumes.