Carbon dioxide, oxygen, water, and acids may all cause chemical weathering. Mechanical weathering is the process of breaking a large rock into smaller pieces without changing the minerals in the rock. Mechanical weathering may be caused by frost, ice, plant roots, running water, or heat from the sun.
MRNA is read 5->3
Start codons can vary depending on the cell/organism type although more generally for mRNA it is always: AUG which is always Methionine
Stop codons for mRNA are:
<span>UAG ("amber") , UAA ("ochre"), <span>UGA ("opal")
</span></span>
<span>5'-uaucc.aug.gca.cuu.uaa.ac-3'
M-A-L
Methionine-Alanine-Leucine
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The correct answer is option B
Sperm cells when pollinated by the insect to the female body part stay there for a while til the part of the flower determines its suitability and once it is done the sperm travels down through the pollen tube.
