Why cannot a population keep increasing forever in an ecosystem?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.