4. Which statement is not correct when discussing myofibrils? * A. each skeletal muscle fiber contains hundreds or more myofibrils.
B. myofibrils contain repeating units called sarcoñeres.
C. filaments consist of bundles of myofibrils.
D. myofibrils extend the length of a skeletal muscle fiber.

it will increase due to the time span

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.