Which of the following events had a probability of 1

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

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.

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only