acastro81101 acastro81101

27-01-2020
Biology

contestada

_____ were the first organisms that released oxygen as a by-product of photosynthesis

Respuesta :

marvellousukpe marvellousukpe

27-01-2020

The answer is tiny organisms known as cyanobacteria

Answer Link

arroyodeanna arroyodeanna

27-01-2020

cyanobacteria or blue-green algae

Answer Link

Otras preguntas

Of the following practices, which is the least sustainable over time? A. a farmer rotates his crops. B. a homeowner tears out a backyard lawn to plant an orchar

The difference between two numbers is 40. Four times the smaller is equal to 5 more than the larger. What are the numbers?

What is the Constant in this Expression?

Which of the following was written to encourage passage of the Constitution and remains a compelling source for determining the intent of the Framers?a. The Fed

“Fight for the things that you care about, but do it in a way that will lead others to join you” What does the quote mean? What does it mean to you?

I NEED HELP PLEASE!!

How do you test color?

Create a program that could be presented to the community by rural farmers using the extension program provided by the Smith-Lever Act.

Molly bought 15 keychains for her friends for $2.67 each. How much did she spend altogether?

The cost of a one-way ticket to Muscat is 487.75 QR and the cost of a return trip is 909 QR. How much cheaper is it to buy a return trip ticket than to purchase