Did trilobites and dinosaurs live at the same time? What is your evidence?

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

Sequence the seafloor features as you move from the shoreline outward into the ocean.

Birds, bats and humans all have a vertebral column. a) if you group birds, bats and humans in one clade and leave out other apes and mammals, what type of group would they form (monophyletic, paraphyletic, polyphyletic)? explain b) what do we call a trait like presence of vertebral column within bats, birds and humans (synapomorphy (shared derived trait), symplesiomorphy (shared ancestral trait), homoplasy)? explain. c) what other organisms would you have to include in this clade in order to have a monophyletic group?