What is ovulation?
please help,!!​

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?

Which technically is nasa developing that will astronauts reach mars

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?