What type of galaxies do scientist believe to be the youngest in our universe A. Rich galaxies
B. Nuclear galaxies
C. Spiral galaxies
D. Irregular galaxies

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !