Why is it useful for an ecologist to identify the keystone species in an ecosystem?
a. the keystone species is only important in early stages of succession, and so the ecologist can safely ignore changes in its population at later stages.
b. the keystone species is the most susceptible to pollution, and so its numbers give an indication of the levels of pollutants in an area.
c. the keystone species is critical to maintaining the stability of an ecosystem, and changes in its population indicate changes in ecosystem health.
d. the keystone species is important for the cycling of matter and must be maintained or the biogeochemical cycles will be affected.
Answers: 2
Biology, 22.06.2019 04:40
The cluster of developing cells from conception until birth is called an
Answers: 1
Biology, 22.06.2019 06:00
In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality
Answers: 3
Biology, 22.06.2019 11:00
In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds? first generation y y y yy yy y yy yy second generation y y y yy yy y yy yy there is a % chance that the offspring will have green seeds.
Answers: 2
Biology, 22.06.2019 11:30
Nucleic acids offer variability because they contain alternate forms of genes called .
Answers: 1
Why is it useful for an ecologist to identify the keystone species in an ecosystem?
a. the k...
a. the k...
Mathematics, 31.07.2019 16:00
Mathematics, 31.07.2019 16:00
Mathematics, 31.07.2019 16:00
Geography, 31.07.2019 16:00
History, 31.07.2019 16:00
Mathematics, 31.07.2019 16:00
Physics, 31.07.2019 16:00
English, 31.07.2019 16:00
Mathematics, 31.07.2019 16:00