Biology, 29.01.2020 05:03 lwilliams28
The human immune system uses a variety of means to defend the body from pathogens. of the lists below, which elements are parts of the human immune system?
a. skin, lymph nodes, white blood cells, and spleen
b. mucous, urine, and kidneys
c. white blood cells and red blood cells
d. skin, neurons, muscle cells, and pancreas
Answers: 3
Biology, 21.06.2019 20:00
The shift of a vehicle's weight around its center of gravity is known as
Answers: 2
Biology, 21.06.2019 22:00
Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.
Answers: 3
Biology, 22.06.2019 02:00
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.
Answers: 3
The human immune system uses a variety of means to defend the body from pathogens. of the lists belo...
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