How did stromatolites contribute oxygen to the early atmosphere?
by weathering of rocks
through photolysis
through methane degradation
through photosynthesis
Answer:
by weathering of rocks
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The right answer is supplying oxygenated blood to the arteries that travel to all major body parts
Aorta is the principal artery of the body.
It starts from the left ventricle of the heart, passes through the thorax and abdomen to separate at the lower part of the abdomen, into two branches called common iliac arteries for the lower limbs. We talk about thoracic aorta then abdominal aorta along its path in relation to the anatomical position. All arteries in the body (carrying oxygenated blood) are directly or indirectly derived from the aorta except the pulmonary artery.
A normal cervix is pink, smooth and shiny, like the mucus membrane inside your mouth. The normal cervix is relatively closed, but it opens and softens during ovulation to allow the sperm easy entry to the uterus. After ovulation, the cervix is hard and produces a thick, cloudy mucus which plugs off the uterus and protects the fertilized egg, if there is one.
The monomers:
In chemistry, a monomer is a most often organic substance used in the synthesis of oligomers and polymers during an oligomerization or polymerization reaction1. The word monomer comes from the Greek monos, one or only one, and meros, part.
In biology, a monomer (or subunit) is the building block of multimeric proteins such as hemoglobin. The arrangement of the monomers with respect to one another is described by the quaternary structure of the protein.
Polymers:
Polymers are a class of materials. From a chemical point of view, a polymer is a macromolecule (molecule consisting of the repetition of many subunits (or many monomers)).
Polymers can be made naturally (by living organisms) or artificially (by humans).
The correct answer is option c that is, changing the role of women.
The flappers were young, scandalous, and liberated. They denied the older ways and became excited over the popular culture and jazz. They did what the society did not anticipated from the young women.
They smoked, danced to Jazz Age music, they spoke their own language, they wore makeup, and they lived for the moment. The flapper fashion followed the lifestyle, and the look became trendy due to the lifestyle.