Answer:
a) only living things are made of cells
During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.
Therefore, the answer is A: The DNA must be replicated.
The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).
Answer:
I think is the second one
Answer: Yes because we have the technology and resources to observe and keep servalince on possible impacting astroids, also ion drives.
Answer:
Selection pressures are external agents which affect an organism’s ability to survive in a given environment
Selection pressures can be negative (decreases the occurrence of a trait) or positive (increases the proportion of a trait)
Selection pressures may not remain constant, leading to changes in what constitutes a beneficial adaptation
Types of selection pressures include:
Resource availability – Presence of sufficient food, habitat (shelter / territory) and mates
Environmental conditions – Temperature, weather conditions or geographical access
Biological factors – Predators and pathogens (diseases)