I no it will be right because I took the quiz I no it is right it is A
C because oxygen was a byproduct of photosynthesis and proved to be EXTREMELY important in the atmosphere.
The environment includes abiotic (nonliving) and biotic (living) factors. An ecosystem consists of all the biotic and abiotic factors in an area and their interactions
Answer:
Option A
Explanation:
Please see the attachment
Answer:
Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears.
Explanation:
The duplicated homologous chromosomes pair, and crossing-over (the physical exchange of chromosome parts) occurs.
