When the earth first developed there was no oxygen. the first living organism, cyanobacterica, added oxygen to the earth. explain why this is was important and what it to create on the earth in order to protect living organisms

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

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.