Which of the following is an example of biotechnology
1. a petroleum-based lubricant used in farming machinery
2. a driverless, solar-powered automobile
3. a robotic probe on mars that can detect water
4. a mechanical implant that delivers medicine

4. A mechanical implant that delivers medicine

Explanation:

Biotechnology is the field of biology that utilizes the knowledge of biology to deals with cases of daily problems of human society by developing technology. A mechanical implant is a device which is manufactured by the human beings so as to perform a desired function of the missing biological structure.  

The mechanical implant can deliver the medicine inside the body. Thus it can be considered as an example of biotechnology.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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