Asphere made of steel is put in water and surprisingly it floats. develop a hypothesis to explain this observation.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height