1) How can you still justify saying that Canada has a population density of 8.7 people

Biology

1 answer:

d1i1m1o1n [39]3 years ago

4 0

Answer:

Due to average population density.

Explanation:

The population density of Canada is the average population density of the whole Canada whereas the population density of city of Montreal refers to the population density of one city only. There are some regions in the country usually in the rural areas where population density is very low while on the other hand, the population density of cities are very high due to more job opportunities so that's why the population density of Canada is lower as compared to the city of Montreal.

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Please help me!

Artemon [7]

Answer and explanation:

To address this question, we could design an experiment where the effect of soil and gravel can be tested independently. One approach is to test this via Completely Random Design (CRD). Here, the treatments would be assigned to experimental units completely at random and each treatment will be tested in replication (e.g. triplicates).

The treatment levels would be (1) Grass growing in the soil (triplicates) and (2) grass growing in the gravel (triplicates). There will be total 6 experimental units and they will be placed randomly. The growth parameters of grass would be then tested after growing for a certain period of time, let's say 90 days.

After this period, the grass will be harvested and the biomass, root length and shoot length will be measured. Because each treatment has three replicate, we will have a clear estimation of soil and gravel on plant growth. The standard deviation would help estimate the effect of natural variations in different treatments. However, they would be consistent because of same environment given for the growth.

The independent variables would be "soil and gravel" and dependent variables would be "growth parameters of the grass (plant root and shoot length and biomass)".

7 0

3 years ago

What method(s) do plants use to obtain nitrogen? Select all that apply.

elena-14-01-66 [18.8K]

Answer:

Plants can't use N2 as is so the first option is wrong. They do have relationships with bacteria that live in nodules of the root and convert the nitrogen into ammonia, a usable form for the plants. So the second option is correct. There are bacteria living in the soil as well that convert nitrogen to ammonia so technically option 3 is also correct. Again, nitrogen if present in water would be in the form N2 which is not usable by plants so 4 is wrong.

These are correct:

use bacteria to convert nitrogen to usable form

In obtain usable nitrogen compounds from the soil

4 0

3 years ago

If a cat fights with a dog who wins and why?

Grace [21]

Answer:Dog

Explanation:

A dog is at a higher advantage because it has a larger jaw which could easily be used to crush a cat during a fight

3 0

3 years ago