All the populations of organisms living close enough together for potential interaction make up a community!
No net primary production occurs BELOW THE OCEAN DEPTH WHERE LIGHT IS 1% OF SURFACE LIGHT.
Net primary production = <span>gross photosynthetic carbon fixation - the carbon respired to support maintenance requirements of the whole plant.
In short, net primary production is the "available" carbon left for to aid in plant growth and consumption of other heterotrophic organisms.</span>
Gerd can cause damage to the throat and airways from gastric contents and can cause asmatic symptoms. It is also worth noting that gerd symptoms tend to worsen at night from laying flat.
Ammonoids are good as index fossils because of the following characteristics;
<span>1.
</span>Their abundance and vast distribution across most shallow
marine waters during the periods
<span>2.
</span>They have easily recognizable
features, such as shells and the highly crenulated and complex suture, that are well preserved in rocks
<span>3.
</span>Their rapid
evolution that can assist determine changes and variations in the then environment
