How can biologic weathering result in chemical weathering? help please 1. oxygen mixes with minerals to form oxides
2. roots loosen soil and break rocks
3. large herds trample rocks and break up soil
4. bacteria release acids and other agents that break down rock

ok

explanation:

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: