How do farmers prevent erosion on sloped surfaces in agriculture? 1points a terraces b fertilizers c irrigation ditches d increased salt content

What was the land like over 500 million years ago? what was under the sea?

Twin boys have girlfriends one of the couples have a baby would the dna of the lil baby be the same as the couples dna bc the boys are identical twins

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes