<span>The hypothesis was that the cause of stomach-ulcers
is Helicobacter pylori and not spicy food. Marshall and Warren were able to
prove that the main cause of peptic ulcers was the bacterium Helicobacter
pylori instead of the spicy foods and stress, which physicians believed were
the main causes of peptic ulcers at the time.</span>
Answer:
D
Explanation:
A: Interphase = DNA replication, cells spend most of their time in interphase
B: Prophase = Chromatin condenses and becomes visible
C: <u>M</u>etaphase = Chromosomes line up in the <u>m</u>iddle
D: <u>A</u>naphase = Sister chromatids are being pulled <u>a</u>way
E: Telophase = Cleavage furrow forms
A leaf is made up of many layers and is surrounded by two. Upper epidermis, mesophyll, bundle sheath, vein, mesophyll, lower epidermis, and guard cells.