Water is made up of hydrogen and oxygen. While underwater the water molecules glide and some stick to your body but they do not break off of your body until they are subjected to air which gives you the "wet" sensation.
So in other words if I am above water and spill some water on my arm then I am wet because it is interacting with the oxygen in the air. If my arm is underwater then it is not wet because it is constantly underwater and the water molecules are just gliding along my skin and it isn't until my arm is removed from the water that is becomes attached to my arm and makes it feel wet.
Water = wet when above water but when submerged in water then water doesn't necessarily equal wet.
Muscle energy and stroke rates of emperor penguins , implication for muscle metabolism and dive performance.
Answer:
b. The number of cactus plants would increase.
Explanation:
Food chain is defined as a linear netwrok between producer and high level predators of environment and shows the flow of energy between them.
Kangaroo rats are rodents which lives in desert and feed over cactus plants, grass and other isects for their survival. If kangaroo rats will be removed from the food chain, the number of cactus plants will increase as kangaroo rats will not be there to feed them and number of snakes will decrease as snakes may die as they feed over kangaroo rats.
Hence, the correct option is b.
Implications of natural selection in shaping 99.4% nonsynonymous DNA identity between humans and chimpanzees: enlarging genus Homo. we compare approximately 90 kb of coding DNA nucleotide sequence from 97 human genes to their sequenced chimpanzee counterparts and to available sequenced gorilla, orangutan, and Old World monkey counterparts, and, on a more limited basis, to mouse. The nonsynonymous changes (functionally important), like synonymous changes (functionally much less important), show chimpanzees and humans to be most closely related, sharing 99.4% identity at nonsynonymous sites and 98.4% at synonymous sites. On a time scale, the coding DNA divergencies separate the human-chimpanzee clade from the gorilla clade at between 6 and 7 million years ago and place the most recent common ancestor of humans and chimpanzees at between 5 and 6 million years ago. The evolutionary rate of coding DNA in the catarrhine clade (Old World monkey and ape, including human) is much slower than in the lineage to mouse. Among the genes examined, 30 show evidence of positive selection during descent of catarrhines. Nonsynonymous substitutions by themselves, in this subset of positively selected genes, group humans and chimpanzees closest to each other and have chimpanzees diverge about as much from the common human-chimpanzee ancestor as humans do. This functional DNA evidence supports two previously offered taxonomic proposals: family Hominidae should include all extant apes; and genus Homo should include three extant species and two subgenera, Homo (Homo) sapiens (humankind), Homo (Pan) troglodytes (common chimpanzee), and Homo (Pan) paniscus (bonobo chimpanzee).
Answer:
Explanation:
It is sometimes used in medicine to examine body fluids. The chemicals of interest (ones that should not be in the body) will separate out differently than the fluids that should be there.