Answer:
Explanation:
The structure of the two endoplasmic reticulum makes the difference.
Endoplasmic reticulum (ER) is located in the cytoplasm membrane in the eukaryotes and its divided into two the rough and smooth endoplasmic reticulum.
Rough ER has ribosomes which gives it the name rough because of its appearance. The ribosomes on rough ER helps it to specialize in the synthesis of proteins. proteins in a cell, are synthesize by it. The smooth endoplasmic reticulum lacks ribosome in its structure and cannot synthesize protein but lipids.
Out of the chooses given, the best description between evolution and natural selection is that natural selection leads to evolution. The correct answer is A.
Answer:
D. They define geological periods because scientists use them as reference points for tracking the history of the earth.
Explanation:
Catastrophic events related to changes in geological timeline are very useful in defining geological periods.
These events have very significant appearance in the geological record and can be used to determine the history of the earth.
The catastrophic events usually culminates into extinction cycles or termination of some organisms from the earth surface.
Geologists use these events that are often wide spread to delineate geological periods.
Answer: A
Explanation: there clearly isn’t no dinosaurs now so it can’t be b or c
By organizing data<span>, a scientist can more easily interpret what has been observed. Making sense of </span>data<span> is called interpretation. Since most of the </span>data<span> scientist collect is quantitative, </span>data tables<span> and charts are usually used to organize the information. Graphs are created from </span>data tables<span>.
dont take it word for word
hope this helps</span>
