How do California mussels stick to rocks

byssus threads, to loosely attach to a surface while still being able to drift and absorb nutrients in the water.

Explanation:

When mussels dangle from marine surfaces, they hold on by a cluster of fine threads. These filaments may appear flimsy, but they can actually withstand powerful impacts from currents or crashing waves. Now, researchers are unraveling the secret of these thin, bungeelike cords in order to develop more effective glues and other synthetic biomedical materials.

beaches, climate, and waters

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]