Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
Vin:
--- Quote from: aangel42 on June 07, 2010, 03:40:00 pm ---The surface waters of the ocean contain a population of microscopic plants (plankton).
Which factor would result in fewer of these plants?
A an increase in the population of microscopic animals
B greater concentration of mineral nutrients
C more light
D warmer ocean water
What's the answer and WHY?
--- End quote ---
A, right? Predators.
Raywin:
Trickyy.. :/ Please help :)
Is it B?
zarkajordan:
The activity of decomposers returns substances to the atmosphere.
Which products of decomposition enter the atmosphere?
A carbon dioxide and nitrogen
B carbon dioxide and water
C oxygen and nitrogen
D oxygen and water
The marking scheme says the answer is B how come its not A?
mdwael:
--- Quote from: zarkajordan on June 07, 2010, 03:51:12 pm ---The activity of decomposers returns substances to the atmosphere.
Which products of decomposition enter the atmosphere?
A carbon dioxide and nitrogen
B carbon dioxide and water
C oxygen and nitrogen
D oxygen and water
The marking scheme says the answer is B how come its not A?
--- End quote ---
products of respiration are CO2 and water, I dont see why nitrogen is produced
Vin:
--- Quote from: Raywin on June 07, 2010, 03:45:53 pm ---Trickyy.. :/ Please help :)
Is it B?
--- End quote ---
We got the same thinking. I really don't know y. I just guessed it because for these kinda ques. the answer is always awkward, you know what I mean. Which year? What is it given in the ms?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version