The work of scientists usually begins with : B. careful observations
After the observations, the scientist will gather the data and used it to find out the truth about a specific occurrence
hope this helps
Hello,
<span>D.
the eye; the brain</span>
The answer is true
This driver error was the cause, 21 percent occurred from going too fast for road conditions. Speeding also increases the likelihood that a crash will result in injury. ... Teens driving 40 mph in a 30 mph zone may think they're “only” going 10 mph over the posted speed limit.
The answer is 3.
The structure A is the oviduct, where fertilization usually takes place. If the both the oviducts are blocked, the eggs could still be produced in the ovaries. So 1 is incorrect.
For 2, sperm is produced in male and insulin is related to the pancreas, not the uterus. So, incorrect.
For 3, the sperms could not travel to the oviduct and meet with the egg. Thus, no fertilization.
For 4, if there is no fertilization, embryos could never develop.