What is the geologic column? A. a sequence of rock layers with known rock
and fossil formations
B. a column of dense ore that holds together
rock layers
C. an extremely deep hole that reaches the
bottom of Earth's crust
D. an area where fossils from every time period
resurface

answer: c. two haploid cells

explanation:

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

because photosynthesis could not occur (apex)