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3 years ago

Which of the following describes the cause of Addison's disease?

Biology

1 answer:

-Dominant- [34]3 years ago

3 0

Answer:

b. Low levels of secretions of the hormones produces by the adrenal cortex

Explanation: is correct

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The Eurasian water milfoil is a nonnative

Mashutka [201]

The right answer for the question that is being asked and shown above is that: "(4) the introduction of a species that has increased the long-term biodiversity of an ecosystem." This plant ruins fishing areas and interferes with boating and other water sports. This is an example of the introduction of a species that has increased the long-term biodiversity of an ecosystem

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3 years ago

What are 3 polar sub climates

Andreas93 [3]

A polar climate only has 2 subtypes. These are tundra climate (ET) and the ice cap climate (EF).

Both climate lack of warm summers. The average temperature is less than 10 degree Celsius. In a tundra climate, they experience at least a month of having above zero temperature compare to an ice cap which is always below zero.

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3 years ago

How is a virus different from a bacterium?

mars1129 [50]

Answer:

option B

Explanation:

On a biological level, the main difference is that bacteria are free-living cells that can live inside or outside a body, while viruses are a non-living collection of molecules that need a host to survive.

do consider marking as Brainliest if this helps!!

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3 years ago

Read 2 more answers

What types of cells have half the number of chromosomes ?

Sholpan [36]

Gamates cells have half the chromosomes

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3 years ago

Two insecticides will be compared for their effectiveness in eliminating aphids on tomato plants. Forty tomato plants of the Big

densk [106]

Answer:

The t-test

Explanation:

The researcher should use a t-test to compare the two means and check if they are significantly different from each other.

In using the t-test, both null (H0) and alternate (H1) hypothesis are made such that:

H0: n1 = n2
H1: n1≠ n2

Thereafter, the value of t is calculated and compared to its critical value on the table. The formula for calculating the t goes thus:

$t = \frac{Y_1 - Y_2}{\sqrt{\frac{S_1}{n_1} + \frac{S_2}{n_2} } }$

where, Y1 = mean of population 1, Y2 = mean of population 2, S1 = variance of population 1, S2 = variance of population 2, n1 = number of individuals in population 1 and s2 = number of individuals in population 2.

At the end of the day, if the calculated t value is more than the critical value of t, the H0 is rejected and it shows that the two means are significantly different. Otherwise, the H0 is accepted and this shows that there is not significant difference between the mean of population 1 and that of 2.

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3 years ago