Which of these is a true statement?
a. Habitat loss is the most frequent cause of extinctions today.
b. Exotic species are often introduced into ecosystems by accidental transport.
c. Climate change may cause many extinctions but also expands the ranges of other species.
d. Overexploitation of fisheries could lead to a complete collapse of the fishing industry.
e. All of these statements are true.

Answer

e

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Video Transcript

all rights were a problem for seven and risking us, which which of these four or all statements are true, Right, So So the 1st 1 here, the 1st 1 is talking about habitat loss and being a are the most frequent cause of extinctions, right? And so if you think about it, are two most bio diverse places they're going to be like the rainforests Rain, tropical rainforest, I should say, um and and like the great very for it is great. Coral Reese, uh, coral is kind of hard to draw, but trying my best here and then and then as we have these quartile restraint with fish and what's happening is is a lot of deforestation, deforestation to the rainforests. And, of course, it's hard to have not heard about sort of the damage being done to the coral reefs by the temperature change, right? Already about 60% of of some of our great quarries have been destroyed. Um, and so these habitat loss, because, uh, the they're so about evers are having a great impact on extinctions. Right? So these air leading both of them lead to lots of extinctions. Eso we can kind of conclude from this, then that a is true. But of course we have a few more statements to look at. So so we goto go to be. And this one is looking at exotic species and how they're introduced. So how exactly are exotic species introduced? Well, it's not uncommon. Safe, if we were in would pretend that's Europe, right? And in the U. S. Is Costa's somewhere over here. Will you have a boat? Ah, boat here and in a species just kind of crimes on board, right? Was supposed to, ah, transport t But now he's got a new mouths on it that we've never seen in the US before and the boat will travel across the ocean. I guess that's to Florida, huh? And then all the sudden, it's brought the smallest over right. So So this is definitely also a true true statement. Be that the sort of accidental transport when you're trying to transport something else, um, sometimes brings new species from one place to another. Let me get to see and ah sees talking about climate change, um, both destroying or like removing species blossoms, expanding the range, and so the U. S. Is another good example of that, right? So if this is, uh, the United States here, a little bit of Mexico, um, what's happening? Thanks to global warming, right, Eso maybe at one point the range with the range of some of these, like cicadas are even mosquitoes with maybe roughly about midway through. But now that we have climate change and it's hotter, so is the temps go up. Their range is too expands his places that wants to cold no longer freeze in the winter, right? And so you could make it. You can make a live here and of course, in all of us has main and little tip of Minnesota. But, uh, what's happening is a range expansion, right? And this is very common, especially with who warming that tropical species are expanding their, uh, their habitat range. So So C is also a true statement. All right, let me just have just the one last one, which is, or exploitation of the fisheries. And so what's happening here is essentially your fish populations of a certain size right, and it needs to be of a certain size in order to sustain itself in order for there be enough fish. Thio survived maturity and reproduce. But we we fish when, uh, re over fish I should say what'll happen is that there won't be enough left to sort of replace the previous one. So for fishing and we Mr, knock out to many of the population that all of a sudden the population will lashes collapsed on its own. Um, from not not quite being large enough. And so something D's also also gonna be correct. And so, uh, sort of the theme theme here for these few questions is that the correct the crowd answer is going to be e all of them.

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