WHAT ARE THE CONS: Unwanted human embryonic stem cells should be harvested for scientific research

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

Rue or false siblings look simila rbecause they each have some traits of their parents.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom