the answer i think be a area a has more predators then area b because if it was disease or lack of food source they wouldn't that low i think
It is true that r-related species have a short life span and an early reproduction cycle. R-related species also known as r-strategist have a short and simple life span. Due to their simple life span, their nutrient exchange rate with the environment is rapid. Unlike K-selected species, they have the ability to reproduce at a young age. They reproduce a large number of off-springs, but many of their off-springs tend to die before attainment of their reproductive age.
What's up? i learned this a pretty long time ago so bear with me
all cells: dna, nucleus, ribosome, cytoplasm, cell membrane, (mitochondria??)
1/2: cell wall, vesicles
i think i may be wrong on mitochondria, again i honestly forget this due to the school system kinda failing us