Biology, 09.12.2019 19:31 ngoziblack
What is an umbrella species? group of answer choices
a species that has a disproportionately large effect on its environment relative to its abundance.
a species that is very economically important to humans.
a species whose own survival ensures the survival of many others.
a species whose presence, absence, or relative well-being in a given environment is indicative of the health of its ecosystem as a whole.
Answers: 2
Biology, 22.06.2019 02:30
Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .
Answers: 2
Biology, 22.06.2019 04:30
Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?
Answers: 3
Biology, 22.06.2019 09:30
What type of plant is good for a bioassay and where can i buy it? i only have a month.
Answers: 2
Biology, 22.06.2019 13:00
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
Answers: 1
What is an umbrella species? group of answer choices
a species that has a disproportio...
a species that has a disproportio...
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