D because all your veins ate nearly in your heart and if your heart stops they stop too
Answer:
different traits inherited by pffspring have different survival values
Explanation:
The surviving R strain transformed into a living S strain.
Answer:
Hi there!
Fitness in evolution means the ability to survive to reproductive age, find a mate, and produce offspring.
Answer:
cell membrane, nucleus, and cytoplasm.
Explanation:
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of very tiny, but distinct, structures called organelles.
