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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Wed Dec 11, 2013 8:55 am 
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Junior Virtual Ranger
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How long can a crocodile stay under water and by what mechanism?

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Wed Dec 18, 2013 2:59 pm 
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Generally 10-15 minutes but it can remain submerged for up to 30 minutes.

This is done by the change in blood circulation, slow blood flow, reduced body temperature and metabolic speed. The heart rate as a result also slows down to 2-3 beats per minute.

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Wed Dec 18, 2013 3:33 pm 
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They normally dive for only a few minutes, but will stay underwater for up to 30 minutes if threatened, and if they remain inactive they can hold their breath for up to two hours.

They have a four-chambered heart, although modified for their ectothermic nature due to an elongated cardiac septum, physiologically similar to the heart of a bird, which is especially efficient at oxygenating their blood.

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Fri Dec 27, 2013 9:38 am 
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Jaytea :hmz:

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Sun Jan 12, 2014 6:28 am 
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Sorry guys! Offline for the silly season!
Phokojwe you're it!

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Mon Jan 13, 2014 1:59 am 
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Phokojwe :clap:

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Mon Jan 13, 2014 3:12 pm 
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Why do mice gnaw constantly?

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Thu Jan 16, 2014 8:15 am 
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To keep their teeth sharp.

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Thu Jan 16, 2014 1:32 pm 
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Philip1 wrote:
To keep their teeth sharp.

agree. also it's a way to keep their teeth from growing too long and too much, much like we file our nails.

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Fri Jan 17, 2014 9:47 am 
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wildflowergirl :thumbs_up:

Their teeth grow continuously and they need a mechanism to keep their teeth in shape
The front incisors of rodents never stop growing, In fact, continuously growing front teeth is a trait shared by all rodents.

I will hand it over to you. :clap:

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Mon Jan 20, 2014 2:34 pm 
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Thanks Phokojwe. :D


Q: Name a tree (or a few, if you like) that you should not plant in a parking lot area, and the reason why.

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Mon Jan 20, 2014 8:45 pm 
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Any fruit bearing tree as the birds would feast on it and the cars parked underneath it will be decorated with bird...uhm...pooh :tongue:

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Tue Jan 21, 2014 9:18 am 
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Sausage tree- damage from falling 'sausages'!

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Tue Jan 21, 2014 9:21 am 
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jaytea wrote:
Sausage tree- damage from falling 'sausages'!


That was what I was thinking of. That and thorn-trees. you don't want a thorn in your tyres.... :D

Over to you :thumbs_up:

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 Post subject: Re: The easy quiz (RV)
Unread postPosted: Wed Jan 22, 2014 8:28 am 
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How do you distinguish a side striped jackal from a black backed jackal?

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