ANSWER ASAP!! Which type of selection occurs when a population experiences a shift in diversity toward the larger organisms? 1. stabilizing selection
2. directional selection
3. disruptive selection
4. adaptive selection

the sphincter muscles at the end of the digestive tract is the anus.

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.

answer; lower are;