Which of the following is true about fronts? (Select all that apply.) A. They are the center of the air mass. B. They are the boundary between two air masses. C. Low pressure systems often develop along fronts. D. There is usually sunny, clear weather along fronts. E. There is usually rainy weather along fronts.

Blood made up of red and white blood cells work together to form

Select all the correct answers. lactobacillus is a bacteria that live inside humans. these bacteria live on the nutrients from our bodies. they to keep our gut clean and healthy. s. typhi is a bacteria that enter our bodies through contaminated food. this bacteria causes infections in the body. based on this information, which two statements about the association between these bacteria and humans are true? a. lactobacillus shares a parasitic relationship with humans. b. s .typhi shares a parasitic relationship with humans. c. both lactobacillus and s. typhi share a parasitic relationship with humans. d. both lactobacillus and s. typhi share a mutualistic relationship with humans. e. lactobacillus shares a mutualistic relationship with humans, and s. typhi shares a parasitic relationship multiply chrse

Which image shows labeled organelles that are present only in plant cells?