What is the leading cause of food contamination in the united states?

What would happen to the moose population if the wolves were removed?

rewona [7]

Answer:

Moose would go unchecked and increase to a point and then decrease due to other limiting factors.

8 0

3 years ago

Read 2 more answers

A plant can produce either purple flowers or white flowers. What is the probability of purple-flowered offspring if two plants t

pickupchik [31]

Answer:

it should be 4:4

Explanation:

The p will stand for purple and the w will stand for white.

it would go like P | P

W | PW | PW

8 0

2 years ago

Read 2 more answers

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.

7 0

3 years ago

When would a male be expected to improve his fitness by attempting to mate at sea rather than establishing a harem?.

Colt1911 [192]

D. A small male will do better mating at sea when suitable beaches are more common than are large, dominant males.

When small males are relatively abundant then would a male be expected to improve his fitness by attempting to mate at sea rather than establishing a harem.

The ability of an organism to reach reproductive age, find a mate, and give birth is referred to as biological fitness, sometimes known as Darwinian fitness. In essence, the number of offspring an organism has over the course of its lifespan determines its biological fitness.

Harem- A group of animals known as a harem consists of one or more males, several females, and the offspring of those females. The dominant male drives away other men and maintains the group together.

The given question is incomplete, the complete question is,

Q. When would a make be expected to improve his fitness by attempting to mate at sea rather than establishing a harem.?

A. A large, competitively dominant male will do better matting at sea when small males are relatively abundant.

B. A large, competitively dominant male will do better matting at sea when suitable beaches are more common than are large, dominant males.

C. A small male will do better mating at sea when suitable beaches are rare and successfully defended by large males.

D. A small male will do better mating at sea when suitable beaches are more common than are large, dominant males.

To know more about fitness, click on the below link,

brainly.com/question/7265511

#SPJ4

6 0

1 year ago

What are the two main reasons of pollutants, on the basis of their decomposition?

Luden [163]

They are biodegradable and non biodegradable

3 0

3 years ago