# PLEASE HELP!! Which of these is necessary for gas exchange in the respiratory system? a.At least 30% oxygen in the air b.The exchange surface must be moist c.The air must be cooler than body temperature d.The blood cannot be moving ​

###### Question:

Which of these is necessary for gas exchange in the respiratory system?
a.At least 30% oxygen in the air
b.The exchange surface must be moist c.The air must be cooler than body temperature
d.The blood cannot be moving ​

### To make the most out of flash cards you should put as much information as you can onto one card

To make the most out of flash cards you should put as much information as you can onto one card...

### Determine the quadrant in which the terminal side of 0 lies. (a) coto > 0 and cos0 < 0 (Choose one) V (b) sin 0 < 0 and seco < 0 (Choose one) quadrant I quadrant II quadrant III quadrant IV ?

Determine the quadrant in which the terminal side of 0 lies. (a) coto > 0 and cos0 < 0 (Choose one) V (b) sin 0 < 0 and seco < 0 (Choose one) quadrant I quadrant II quadrant III quadrant IV ?...

### First second third or fourth

first second third or fourth...

### Would you rather: be color blind or have no taste buds? just to give yall points lol

would you rather: be color blind or have no taste buds? just to give yall points lol...

### Bell-shaped and nearly transparent, jellyfish have dangling tentacles that contain tiny stinging cells to paralyze prey. Adjectives

Bell-shaped and nearly transparent, jellyfish have dangling tentacles that contain tiny stinging cells to paralyze prey. Adjectives...

### Convection cells in the mantle drive movements of the plates. True or False

Convection cells in the mantle drive movements of the plates. True or False...

### Why would your muscle cells switch to anaerobic respiration if it doesn't produce as much ATP? Help please

Why would your muscle cells switch to anaerobic respiration if it doesn't produce as much ATP? Help please...

### David gets 65 chocolates an hour for cleaning. He gets a 15% raise. He cleans for 60 hours this week. How many more chocolates will he get this week as a result of his raise?

David gets 65 chocolates an hour for cleaning. He gets a 15% raise. He cleans for 60 hours this week. How many more chocolates will he get this week as a result of his raise?...

### What did the mayas and aztecs mix with the seeds and spices to make early chocolate

what did the mayas and aztecs mix with the seeds and spices to make early chocolate...

### The sediment deposited by glaciers is called __________ .

The sediment deposited by glaciers is called __________ ....

### Which of the following is not part of your identity? A. Interests B. Convictions C. Religion D. None of the above

Which of the following is not part of your identity? A. Interests B. Convictions C. Religion D. None of the above...