Which one of the following statements about attitudes is correct?
a. negative attitudes can't be changed.
b. positive attitudes can us learn quicker.
c. there's one fundamental way of acquiring attitudes.
d. attitudes can't be learned from other people.

What is the term for all traits passed biologically from parent to child.

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv

Skin puncture techniques are useful when