9 Which of these best demonstrates mutualism between certain types of bacteria and humans?
A
Intestinal bacteria obtain nutrients from the gut and produce vitamin K used by humans.
B Bacteria become resistant to antibacterial medication that humans use for treatment.
C
Invasive bacteria at an area of injury produce toxins that damage healthy tissues of the
human body.
D
Bacteria in improperly prepared food is consumed by humans, causing food poisoning.
QUESTION # 6

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

How does human environment effect the biosphere

Study this image which statement best describes the rock shown check all that apply