Which statement is true? An endocrine lab technician teaches classes and conducts research on the endocrine system.
An endocrine lab technician specializes in lab testing for diseases and disorders related to hormone levels.
A certified diabetes educator prescribes medicine and refers patients for surgery.
A certified diabetes educator analyzes samples of body tissues and fluids.

1. desertification

2. captive breeding

3. black rhinoceros

4. renewable resources

explanation:

mark brainliest!

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

can you make it bigger i can't see it