Your answer is D, Rhizobium
A: an ecosystems organisms become larger as succession
NO, they should not.
Erythrocytes, leucocytes, and proteins (albumin)
are not small enough to pass through the capillaries of the
glomerulus unless there is damage to the glomerulus. However, glucose does pass through into the glomerular filtrate. Nonetheless, glucose is fully reabsorbed back in the proximal
convoluted tubule (unless you have severe diabetes).
Environments are always changing so organisms need to adapt to survive. The organisms that survive are the ones that are fit to live in that environment, which is where survival of the fittest comes into play.
I think you forgot to add an image, there’s no context for anyone to answer your question