(Q).
You are presented with the question "What can infect rhizobium?" and the following answer choices: - gasoline - viruses - water - sunlight - fungi - bushes - herbicide - Pesticides Now knowing that viruses often infect bacteria and rhizobium bacteria are native soil bacteria and non pathogenic, choose the best answer.
(A).
viruses

(Q).
You are presented with the question "How has the greenhouse effect changed in the last decade?" and the following answer choices: - moved to South America - improved - Temperature - fossil fuels - has become cooler - worsened - climate - growth Now knowing that carbon dioxide concentrations in the air have increased over the last decade dramatically and increases in carbon dioxide make the greenhouse effect worse, choose the best answer.
(A).
worsened

(Q).
You are presented with the question "what causes sweat to be produced to cool a person down?" and the following answer choices: - exercise and fever - wool pants - the sun - Movement of an air mass - shooting stars - Evaporation - centralized nervous system - water vapor Now knowing that when the body is hot , sweat is produced to cool the body and exercise, fever, and heat cause the body's temperature to rise, choose the best answer.
(A).
exercise and fever