Answer:
Index
Explanation:
An index fossil can be used to identify a specific period of time. Organisms that make good index fossils are distinctive, widespread, and lived briefly. Their presence in a rock layer can be used to identify that period of time over a large area.
Answer:
In the given case, the flowers A and B are temporally reproductively isolated from each other.
Explanation:
Reproductive isolation takes place when populations cannot mate efficiently with each other. As a consequence, slight genetic differences originate within the populations. With time, the genetic differences gathered in the isolated populations results in the formation of various kinds of different species. In the given case, even though both the flowers A and B are the similar species, the two different flowers bloom at distinct times, resulting in a time-imposed or temporal barrier to reproduction.
Answer:
C. mRNA
Explanation:
Hello,
In this case, we may remember that when DNA is undergoing transcription a specific sequence is copied via the RNA polymerase in order to produce the messenger RNA which is subsequently used as the starting material of translation for the protein synthesis as shown on the attached picture. Thereby, answer is C. mRNA, since the transcription process produces it and then, for the translation process, it contains the codons which promote the formation of polypeptides (proteins) via the connection of the anti-codons contained in the tRNA which also provide the amino acids for the polypeptides formation.
Regards.
Answer:
a) Chloroplast
Explanation:
Since the figure shows an organism by an envelope formed by two concentric membranes containing vesicles called thylakoids, where they are organized pigments and other molecules that convert light energy into chemical energy, such as chlorophyll.
An annular solar eclipse is when the Moon covers the Sun, but not completely. A ring is left around the Moon where the Sun's light can still be seen. During an annular solar eclipse, the Moon is at apogee, so it is far enough from Earth where it can't completely block out the Sun.
Why is there a ring left around the Moon where the Sun's light can still be seen?
- The Moon's orbit not perfectly circular
- When the Moon is closest to Earth, it is called "perigee".
- When it is furthest, it is called "apogee"
HOPE THIS HELPS, CAUSE IM NOT SURE WHAT ARE YOU ASKING...