How do you design a controlled experiment to appropriately test a hypothesis? at least 4 sentences, please.
subject is science but it only lets me pick biology i need the answer asap.

Step 1: Define your variables.  

Step 2: Write your hypothesis.  

Step 3: Design your experimental treatments.  

Step 4: Assign your subjects to treatment groups.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.