Tricuspid valve? i hope its right my best guess
It is a virus; they are not a type of cell
Answer:
eight haploid
Explanation:
Megaspore (macrospore) is a type of spore present in heterosporous (production of spores of two different sizes and sexes) plants.
During megagametogenesis, a single nucleus undergoes mitosis three times producing an eight-nucleate.
Answer:
Groundwater.
Explanation:
Groundwater in this case is the primary abiotic factor that inhibits organism from being preserved after been buried. After being buried, decomposers here becomes the biotic factors that eat up dead bodies.
It is also known that sedimentary basins encounters a certain change in its subsidence rate over time, and eustatic sea level changes continuously, causing depth to variations in groundwater and lakes, ocean temperature, spreading rates, continental collision and cracks, and sedimentation in ocean basins.