Which of these is an abiotic factor of an aquarium ecosystem?
a.
algae growing on the glass
b.
gravel on the bottom of the aquarium
c.
plants growing from the gravel
d.
fish swimming in the water

Sydney drew a flow chart to illustrate the nitrogen cycle.which labels best complete the flow chart? x: producers undergo photosynthesis.y: nitrogen compounds are released into the air.x: nitrogen compounds are released into the air.y: producers undergo photosynthesis.x: free nitrogen is in the atmosphere.y: producers absorb nitrogen compounds through their roots.x: producers absorb nitrogen compounds through their roots.y: free nitrogen is in the atmosphere.

What is the role of dna ligase in the elongation of the lagging strand during dna replication?

In an hydrogen ion pump the energy is used to join small molecules together to make larger ones which factor most likely has the greatest effect on the number of molecules mitochondria can produce