energy flow and matter cycling
1every ecosystem carries out the basic processes of:
energy flow and matter cycling
photosynthesis and nitrification
solar energy capture and re-radiation
evaporation and precipitation
2 the biological role played by a species in its environment is called a:
ecosystem
habitat
niche
population
3 predators rarely kill and eat all available prey because:
predator and prey species often occupy the same trophic level in an ecosystem
prey species often lack protective mechanisms to deter being eaten
many predator and prey species have a commensalistic relationship
predator species often will switch its prey as one prey species becomes less abundant
4 is an overabundance of nutrients that leads to excessive plant growth and
reduction of oxygen in an ecosystem.
denitrification
eutrophication
nitrification
phosphorylation
5 which of these biomes receives the greatest amount of yearly rainfall?
boreal forest
grasslands
temperate forests
tropical forests
6 an organism's position within a food web is known as its:
ecosystem
habitat
niche
trophic level
7 which of the following describes organisms in a pelagic zone?
plankton floating near the ocean surface
bottom-dwellers on the ocean floor
barnacles glued to stone in an intertidal zone
frogs in a pond close to the pond's edge
8 which of the following is not an example of secondary succession?
farmland is abandoned
a forest is clear cut
a lava flow covers the landscape
a wildfire burns away the vegetation on a hillside
9 in a lake, the epilimnion is the:
environment found close to shore in a lake
environment found at the lake bed
lower, colder layer
upper surface layer
Answers: 1
Biology, 21.06.2019 20:00
In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.
Answers: 2
Biology, 21.06.2019 22:00
Protein synthesis actually begins in the nucleus when transcribes a single gene on the dna molecule is copied. the process of copying this gene is called this copy is known as and contains the protein building instructions. this copy is sent out into the cytoplasm to the part of the cell known as the the of the ribosome will join together to form a functional ribosome when they attach to the mrna. as the mrna moves through the ribosome, the message is read by transfer rna brings the correct back to the ribosome. the amino acids are placed in the correct order and are hitched together by
Answers: 3
Biology, 22.06.2019 06:20
The science for classifying and naming organisms is known as
Answers: 2
Biology, 22.06.2019 08:00
Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species
Answers: 1
1every ecosystem carries out the basic processes of:
energy flow and matter cycling
energy flow and matter cycling
Mathematics, 09.01.2020 17:31
Mathematics, 09.01.2020 17:31
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Mathematics, 09.01.2020 17:31
Mathematics, 09.01.2020 17:31
Mathematics, 09.01.2020 17:31
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Mathematics, 09.01.2020 17:31
Mathematics, 09.01.2020 17:31
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