Evaluate at least 200 spermatozoa, tally the numbers of live and dead spermatozoa using a laboratory counter, and calculate the percentage of live spermatozoa (see Note 10). The lower reference limit for vitality assessed by eosin–nigrosin stain (membrane-intact spermatozoa) is 58% (5th percentile, 95% CI 55–63) (1).
Answer:
The kidneys will increase the deposition of calcium in the bone as a result of the release of calcitonin by the para follicular cells in the thyroid gland.
Answer:
There will be less animal life in lake Raymond in the next year.
Explanation:
In the year with heavy rain, this has caused the depth of Raymond lake to be increased. This will bring an increase in the growth and survival of more water plants and animal species.
In the second year where there is a decrease in the water level, the animals and water plants will face problems. The worst hit are those plants and animals species that lives at a much deeper path of the lake with the least sunlight or any external factors that are now going to be more exposed due to low water level..
Answer: i think it could be the habitat in which the agent normally lives, grows, and multiplies.
Explanation: Basically, the reservoir may or may not be the source from which an agent is transferred to a host.
If it isn’t taken within 72 hours of exposure it simply will not work