Which hazard are we more likely able to predict? Tornado or earthquake. Explain your answer.

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

What are the formed elements (cell or parts of cell) in blood and what are their functions ?