alapogos tortoises have a number of shell variations, shown right. What are the advantages of choosing a system examining the beaks of finches instead of the shells of tortoises? Check all that apply. Birds have shorter lifespans, making generations shorter. The bird population is likely much greater, allowing for more data. Tortoises move too slowly for natural selection to influence shell phenotype. Birds are easier to track and monitor.

The question lacks essential part that is options to answer, however the options are given:

1. Birds have shorter lifespans, making generations shorter.

2. The bird population is likely much greater, allowing for more data.

3. Tortoises move too slowly for natural selection to influence shell phenotype.

4. Birds are easier to track and monitor.

The correct options are : 1, 2, and 4.

Explanation:

For the accuracy and dependability of any experiment, various observations must be as extensive as possible. It decreases the impact of any observation or any event which may have occurred by some coincidence or mistake.  

Therefore, finches were smarter to record observation as they were accessible in enormous numbers when compared with the turtle.  

Likewise, the life cycle of birds is less when contrasted with the turtle which empowered the researchers to observe more generations.  

In conclusion, the birds were anything but difficult to catch and track when contrasted with the turtle. Turtle is a land and water proficient which made it hard to follow them.

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.