Answer:
i think its photosinthisis because...
Step-by-step explanation:
Sometime around 3 billion years ago (about 1.5 billion years after Earth formed!), photosynthesis began. Photosynthesis allowed organisms to use sunlight and inorganic molecules, such as carbon dioxide and water, to create chemical energy that they could use for food.
Hope this helps and maybe a brainlest?
Half of 2/3 is:

This means that 1/3 was left. This also means that they ate 1/3 of the lasagne.
Model diagram can be seen in attachment.
Answer:
2^-15 or 1/2^15
Step-by-step explanation:
3*-5 is -15 so that makes it 2^-15
Apply the exponent rule a^-b = 1/a^b
That changes it to 1/2^15
Hope this helped! :)
A nickel is worth 0.05 and a quarter is worth 0.25.
Multiply number of nickels by the worth and quarters by their worths. Add together to equal total value:
The equation is:
0.05n + 0.25q = $40