To what does “descent with modification” refer? a. All species come from preexisting species but stay basically the same.
b. Some species come from preexisting species and are changed over time.
c. All species come from preexisting species and are changed over time.
d. Some species come from preexisting species but stay basically the same.

I ALREADY KNOW ITS NOT D BUT MY TEST SAID THAT WAS NOT RIGHT AND I ONLY HAVE ONE MORE CHANCE PLEASE HELP

Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

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