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Sladkaya [172]
3 years ago
5

Which of the following biomes likely has the thinnest layer of topsoil?

Biology
2 answers:
lesantik [10]3 years ago
4 0
B is the correct answer which is the dessert 
lianna [129]3 years ago
3 0
The answer would probably be be D
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Nitrogen-fixing cyanobacteria are critically important ecologically.<br><br><br> True or false?
LenaWriter [7]

Answer:

See Explanation

Explanation:

Yes, this is true because some bacteria in our environment tends to either fend off of or kill other types of bacteria. In this case, this bacteria is helpful because it turns gaseous nitrogen into a form that can be absorbed and used by plants in our environment.

5 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
both a father and child drink water that has flowed through lead pipes. there is also lead-based paint on the walls of their hom
Butoxors [25]
The child is more susceptible to diseases than the father because the father has already gained a slight immunity towards the lead by loving in the house longer than the child (assuming the father has lived in the house longer)
7 0
3 years ago
Maintaining internal conditions within in an organism is a character of life known as ____
grandymaker [24]
The answer is homeostasis.
8 0
3 years ago
Which of the following was NOT a recognized kingdom in Linnaeus' early classification system?
PilotLPTM [1.2K]
Fungi is the answer of this question
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3 years ago
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