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Andru [333]
3 years ago
9

I need help environmental science in gca?????

Biology
1 answer:
mariarad [96]3 years ago
8 0

Answer:how do you want me to answer this......

This is not the answer.....‍♀️‍♀️‍♀️‍♀️

Explanation:

This is not the answer

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What heat source should you use to heat flammable organic solvents?
Fynjy0 [20]
Many organic compounds are ignitable, putting them in direct flame may cause fires or combustion. it is possible to start a fire on a hot plate, but typically hot plates are not heated as high and the temperature is somewhat controll-able... you can not control the temperature of a bunsen burner very easily i would not through acetone or ethanol on a hot plate, as it can catch on fire or cause burns, but it's much worse with the bunsen burner.
7 0
3 years ago
Species a diverged from species b 60,000 years ago. On a particular gene, they have 15 nucleotide differences. How many nucleoti
a_sh-v [17]

The given question says that b species diverged around 60,000 year ago from species a. Since the divergence, they have a nucleotide difference of 15 nucleotide.

We need to find out the nucleotide difference in another 240,000 year, which means a total of 300,000 year since divergence.

The nucleotide difference in 60,000 years = 15 nucleotide.

The nucleotide difference in 1 year =\frac{15}{60,000}  nucleotide.

The nucleotide difference in 300,000 years = \frac{15}{60,000}\times 300,000 nucleotide.

The nucleotide difference in 300,000 years = 75 nucleotide.

Hence, after another 240,000 years or 300,000 years since divergence, the species and species b would show a difference of 75 nucleotide.

In another 240,000 years, there would be 60 nucleotide difference, as 15 of the nucleotide are already different in initial 60,000 years from the total of 75 nucleotide difference in 300,000 years. So, 60 (75-15) nucleotide difference would be observed in next 240,000 years.


4 0
3 years ago
"tall" "purple" and "wrinkled" are examples of Dominant Recessive Genotypes Phenotypes​
V125BC [204]

Answer:

Phenotypes

Explanation:

'Phenotype' is just a fancy way of saying 'what an organism looks like'.  Those words describe an organism's physical appearance and not its genetic makeup--that's its genotype.  

You can remember it this way:

Phenotype

Physical characteristics/appearance

----

Genotype

Genetic makeup

6 0
2 years ago
In the traditional phylogeny (A), the phylum Platyhelminthes is depicted as a sister taxon to the rest of the protostome phyla,
Vadim26 [7]

Answer:

In the traditional phylogeny platyhelminthes is depicted as a lophotrochozoan phylum. What probably led to this change?

The removal of the acoel flatworms (Acoela) from the Platyhelminthes allowed the remaining flatworms to be clearly tied to the Lophotrochozoa.

Explanation:

8 0
3 years ago
The phanerozoic eon is divided into three eras. What are they
Aleonysh [2.5K]
1- Paleozoic era
2- mesozoic era
3- Cenozoic era
3 0
3 years ago
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