Answer:
<em>1) Oceans contain simple organic molecules
</em>
<em>2) Complex organic molecules form</em>
<em>3) Protocells develop
</em>
<em>4) Prokaryotes develop</em>
<em>5) Organisms use chemosynthesis</em>
<em>6) Organisms use photosynthesis</em>
<em>7) Ozone layer develops
</em>
<em> 8) Eukaryotes develop</em>
Explanation:
- The early conditions of the Earth were not favorable for the support of life on it. Gradually, the Earth cooled down and inorganic gases and organic molecules started constituting the Earth.
- The organic molecules such as complex lipids gave rise to the protocell.
- The evolution of the protocells gave rise to the prokaryotes.
- Scientific hypothesis have claimed that the first type of metabolism that took place on the Earth was in the form of chemosynthesis.
- The processes of cellular respiration as well as photosynthesis evolved after chemosynthesis.
- The development of metabolic processes caused more gases to be formed and the ozone layer to be built.
- The building of the ozone layer provided stable conditions for the Eukaryotes to develop and survive on the Earth.
ANSWER: The presence of cork cambium depicts that the plant has undergone secondary growth.
EXPLANATION: Cork cambium is also referred to as is also known as Phellogen (a meristematic cell layer). It is found in vascular plants and located in the peridermis.
However, presence of cork cambium indicates that the plant has undergone secondary growth, which is elicited as a result of cell division in the cambia or lateral meristems, which in turn causes the stem and root to thicken.
D. fiber, omega-6 fatty acids
Adipose cells first is a connective tissue cell that is specialized to synthesize and contain large fat or globules. Adipose cells can be categorized in two. the first is the white adipose cells, which contain large fat droplets and only a small amount of cytoplasm and flattened, non centrally located nuclei.
the three general classifications are sensory neurons, motor neurons and interneurons. I don't know how they work together to produce a response to an environmental stimulus:( sorry
