Answer:
v = πr²h
v = 3.142*4²*6
v = 301.71cm³
Explanation:
volume of the cylinder = πr²h
Cells could sense and respond to electromagnet signals such as light and mechanical signals such as touch. Cells often communicate with each other using chemical signals.
I think the cytoskeletal protein that helps a cell maintain its shape is actin.
Answer:
the kidneys
Explanation:
The kidneys help maintain the acid–base balance by excreting hydrogen ions into the urine and reabsorbing bicarbonate from the urine.
Explanation:The rock cycle is a model that describes how rocks are created, changed, and broken down. There are three major types of rock: igneous rock, metamorphic rock, and sedimentary rock. During the rock cycle, each type of rock may be changed into another type.
The rock cycle includes these processes:
Crystallization is the process by which magma cools and forms solid igneous rock.
Heat and pressure can change igneous rock and sedimentary rock into metamorphic rock.
Weathering and erosion are the processes that break down rock into sediment and transport this sediment to other places.
Sediment is changed into sedimentary rock by compaction and cementation.
Melting is the process that transforms solid rock back into liquid magma.