How do organisms living in the intertidal zine use byssal hair?
a) as a net to capture food
b) as an anchor against tidal action
c) as protection against harsh sunlight
d) as a filter to remove salt from water

B) As an anchor against tidal action

Explanation:

Byssal hairs (or threads) are used to anchor organisms to rocks and other solid surfaces to protect them from wave shock (tidal action).

These hairs/threads stretch out in many directions to hold the organism in place. Mussels are an example of an organism that uses byssal threads.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: