Why is DNA replication said to be semiconservative? (multiple choice) A. The old cell keeps part of the original DNA during cell division.

B. The new DNA strand can only be constructed in the 3' to 5' direction.

C. The double helix becomes a single strand of DNA.

D. New DNA has one original strand and one replicated strand.

Pls ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

Why are current extinctions of concern to enviromentalists?

Approximately how many times does an average human heart beat in a lifetime?