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spayn [35]
3 years ago
9

Invasive species often unbalance the ecosystems into which they are introduced because _______. a. they did not co-evolve with t

he natural species and lack natural controls, like predators b. they breed quickly and have the potential to overpopulate an area c. they consume local resources d. none of the above Please select the best answer from the choices provided A B C D
SAT
2 answers:
bezimeni [28]3 years ago
6 0

Answer:

its either A,B,C,D

Explanation

just trust me

Kryger [21]3 years ago
3 0

Answer:

a.

they did not co-evolve with the natural species and lack natural controls, like predators

Explanation:

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The barry family invited 100 relatives to their christmas party. 90 guests had italian heritage, 80 had german heritage and 75 h
Maslowich

The minimum number of people who claimed ancestry from all three heritages is :   45

Given that there are 100 relatives

let's assume that 1 relative = 1 room

100 relatives = 100 rooms

Number of relatives with Italian heritage = 90

Number of relatives with German heritage = 80

Number of relatives with swiss heritage = 75

<u>Step 1 : </u>

Fill up the first 90 rooms with Italian heritage relatives

Fill up the remaining 10 rooms with 10 Relatives with German heritage

<u>Step 2 :</u>

Distribute the remaining 70 relatives with German heritage into 70 rooms out of the 90 rooms already occupied by the relatives with Italian heritage

<u>Step 3: </u>

Distribute the 75 relatives with swiss heritage into the 20 rooms occupied by Italian heritage relatives only and<em> </em><u><em>45 rooms</em></u><u><em> occupied by both </em></u><u><em>German and Italian relatives</em></u><u><em> </em></u>and into the 10 rooms occupied by the German heritage relatives  

Therefore we can conclude that the minimum number of people who claimed ancestry from all three heritages is : 45

Learn more about pie chart : brainly.com/question/25666939

6 0
2 years ago
Read 2 more answers
In a study of helicopter usage and patient survival, among the 56,074 patients transported by helicopter, 235 of them
xxMikexx [17]

Using the hypergeometric distribution, it is found that the probability is 0.845 = 84.5%.

--------------------

  • The patients are chosen from the sample without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

Combination formula:

is the number of different combinations of x objects from a set of n elements, given as:

C_{n,x} = \frac{n!}{x!(n-x)!}

--------------------

  • 56074 patients, thus N = 56074
  • Sample of 40, thus, n = 40
  • 235 left against medical advice, thus, k = 235.

The probability that none left against medical advice is P(X = 0), so:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,56074,40,235) = \frac{C_{235,0}*C_{55839,40}}{C_{56074,40}} = 0.845

The probability is 0.845 = 84.5%.

A similar problem is given at brainly.com/question/24008577

6 0
2 years ago
A triangle has side lengths of 3 and 5 centimeters. which could be the length of the third side so that the triangle is a right
motikmotik

The length of the third side of the triangle will be 4 centimeters if it is a right-angled triangle.

<h3>What is a triangle?</h3>

A triangle is a geometric shape having three sides and the area is equal to 270 degrees. A right angle triangle is one where the angle of one side is exactly 90 degrees.

If two sides measure 3 and 5 centimeters, the triangle will have a right angle if the third side measures around 4 centimeters.

Hence, the third side of the triangle will be 4 centimeters.

Learn more about triangle here:

brainly.com/question/14366937

#SPJ1

8 0
2 years ago
When making smart food choices, what question should be asked before deciding to eat at a restaurant?
Ivan

Answer:

Are the available choices in my nutritional goals

Explanation:

Smart food decisions are required for maintaining your body healthy especially when your following a diet and have a goal.

5 0
2 years ago
List one change in bug morphology that you would reasonably expect in bug populations that have been living on golden rain trees
marysya [2.9K]

Answer:

(a) In this case, small bugs are more likely to have relative fitness on the new food source.

(b) A change that will occur in bug morphology is that the female bugs will turn out to be the same size as the male bugs.

(c) In terms of behavior, the bugs will experience less competition towards reproducing early.

(d) Yes, the dispersing bug would have higher fitness as they will be able to easily get access to new resources once the previous one has run out, whereas the bugs with less developed fight muscles will not be able to do so.

Hope that answers the question, have a great day!

(also, please remember to give 'brainliest' if you found this answer helpful :)

Read more on Brainly.com - brainly.com/question/16696528#readmore

7 0
2 years ago
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