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VikaD [51]
3 years ago
7

Ecosystems change when _______. a. living components of an ecosystem change b. nonliving components of an ecosystem change c. th

eir stability is disrupted d. all of the above
Biology
2 answers:
Brut [27]3 years ago
7 0
<span>The correct answer is D: All of the above. Any small individual changes in the eco-system can cause larger scale changes throughout the eco system due to the interconnectivity of species within the larger system.</span>
Mkey [24]3 years ago
3 0

Answer: d. all of the above

Explanation:

An ecosystem is a community of living organisms which interact among themselves and with their non-living physical environment to sustain their lives. An ecosystem typically consists of abiotic (non-living) and biotic (living) components which are linked together for the energy flow and nutrient cycling.

The changes in an ecosystem will occur if the non-living and living components of the ecosystem change this will bring instability to the ecosystem. For example, water body like river a non-living factor if get dried it will affect the life cycle of the aquatic animals. Therefore, this will bring instability to the ecosystem.

On the basis of the above explanation, d. all of the above is the correct option.

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Which of the following events triggers the subsequent steps of excitation-contraction coupling?
mario62 [17]

Excitation-contraction coupling refers to the series of events that begins with the excitation of the sarcolemma in response to stimulation by a neurotransmitter, and results in the release of calcium ions from the sarcoplasmic reticulum.

Hence, option D is the 1st process that starts the excitation-contraction coupling.

3 0
3 years ago
Read 2 more answers
Which observation would be the best evidence for a recent founder event or population bottleneck?
Bingel [31]
The best evidence of such phenomena could be a population's genetic variation decrease.
When a population bottleneck occur it means that for some reason (i.e. environmental events) the size of a population is largely reduced. This leads to reduction of the genetic variation in that new smaller population. When a bottleneck occur, the founder effect is normally seen, which is that one population is established by a small group of a previously larger population leading once again the genetic variation, now though with a bigger population, to be very reduced.
7 0
3 years ago
How many calories are in an average trick-or-treaters halloween stash?
Vera_Pavlovna [14]

The number of calories on a Halloween stash depends on the type of candies and the number of units of each. If the stash contains 5 units of each of these candies: chocolate bars, taffies, lollypops, and candy corn the total number of calories is 1,650.

Calories are the most common unit used to define the energy a specific food gives to your body. For example, an apple has 52 calories, while a banana has 89 calories.

Considering this, in a Halloween stash the calories depend on two factors:

  • The types of candies or products
  • The units of each one

Let's suppose there are 5 units of each of the following candies:

  • Chocolate bars
  • Taffies
  • Lollypops
  • Candy corn

Let's now calculate the calories

  • Chocolate bars = 220 calories x 5 units =  1,100 calories
  • Taffies = 20 calories x 5 units = 100 calories
  • Lollypops = 83 calories x 5 units = 415 calories
  • Candy corn = 7 calories x 5 = 35 calories

Add all the previous results:

1,100 + 100 + 415 + 35 = 1,650 calories in total

Learn more in brainly.com/question/22374134

8 0
3 years ago
Consider the DNA sequence. 5' C C G T A A C A G T C G A C G A G C A C A T A G C T T C A G C A T A C A G C A G A T A G 3' 3' G G
umka2103 [35]

Answer:

Primers should be:

3 'ACGTATGTCGCTTAGT 5'

5 'ACGTTCCAGTCAATGA 3'

Explanation:

DNA replication occurs with the need for the presence of primers that are a small sequence of nitrogenous bases that will allow the initiation of replication.

Primers are extremely important in PCR and are represented as small pieces of single-stranded DNA that specify the region of DNA that should be replicated during PCR. These primers attach to the single strand of DNA by pairing the nitrogenous bases allowing the DNA polymerase to recognize where replication begins.

Regarding the question above, the primers should be:

3 'ACGTATGTCGCTTAGT 5'

5 'ACGTTCCAGTCAATGA 3'

6 0
3 years ago
Which kingdom is MOST LIKELY to contain organisms that are decomposers?
mr_godi [17]
A. Kingdom fungi because fungi are in that kingdom and they decompose organisms
3 0
3 years ago
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