Which of the following statements about communities is not correct? a) many plant species in communities seem to be independently distributed. b) some animal species distributions within a community are linked to other species. c) the distribution of almost all organisms is probably affected, to some extent, by both abiotic gradients and interactions with other species. d) ecologists refer to species richness as the number of species within a community. e) the trophic structure of a community describes abiotic factors such as rainfall and temperature affecting members of the community.

g1

choices:

a. g2. b. g1. c. m

cell division has two checkpoints namely, g1

checkpoint and spindle assembly checkpoint. the checkpoint which determines if

division has properly occurred is the g1 checkpoint. at this point, is a damage

in the dna is detected or  the has not reach the optimum size, the cell is

stopped in g1 and is not allowed to proceed to further process.

source:

[content deleted] - user123802726recklesschicken

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.