Recent content by Sundog

I'm not understanding this. To my knowledge, in normal function, the amount of blood coming into the heart is equal to the amount of blood going out. Venous return = cardiac output. But how can that be? How can the low pressure venous blood flow match the high pressure arterial blood flow...

Side question- Why do probiotics typically deal with anaerobic bacteria and fermentation?

Thanks! Good info

Whatever you could find or know. I can’t seem to find anything.

Does anyone know how much phytoplankton is in sea water? Say surrounding reefs and near the surface? I couldn’t find a number so I don’t know if it would be in ppm or something els. Thanks!

I'll really have to let that sink in

Basically I know that velocity increases and pressure decreases in order for the fluid to pass through the Venturi. But...my mind goes the opposite way haha. I'll have to let your explanation sink in :smile:

I know that the Venturi effect creates an area of higher fluid velocity with a lower pressure. However I'm having a hard time wrapping my brain around this. I would think that if a fluid passes through a contricted area, pressure would increase. Can someone explain?

Is 0 tds considered to be "ultra pure". I make RODI water all the time for my reef tank. I've drank it (albeit not long term) and so far I'm good.:cool: I've heard that "ultra pure" water can supposedly strip your body of electrolytes. I'm unsure though, and have seen a lot of conflicting...

Does anyone know how algae take in nutrients? Is it by diffusion or active transport?

I'm designing a rope bridge that will span around 40 ft over a pond. First off, I know its not recommended to build a bridge like this without having it designed by a professional. However, I plan on overbuilding it and it will not be very high. I'm also thinking about using 3 or 4 ropes to...