Scientists say that climate data from nine different countries indicate that every country will be hit with major climate changes during this century. how can scientists make such predictions?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

What are the student's observations and inferences before he starts his investigation?

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