The heart is a cone-shaped muscular organ located within the of the thorax. its apex rests on the and its superior margin lies at the level of rib. approximately two-thirds of the heart mass is seen to the left of the heart is enclosed in a serosa sac called the. the heart has chambers. relative to the roles of these chambers, the are the receiving chambers, whereas the are the discharging chambers.
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Biology, 21.06.2019 16:00
Which of the following examples can cause gene flow between populations? a.an increase in predators to a population of zebra b.a volcanic eruption that kills half of a population of mice c.bird droppings that contain seeds from a different location d.a person that sprays a toxin on a group of mosquitoes
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Biology, 21.06.2019 20:00
Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium
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Biology, 21.06.2019 22:30
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
Answers: 2
Biology, 22.06.2019 00:10
The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.
Answers: 1
The heart is a cone-shaped muscular organ located within the of the thorax. its apex rests on the...
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