PLEASE I NEED HELP I WILL GIVE 20 POINTS. What is an Autotroph?

Question 3 options:

organisms that food by eating other organisms or the remains of other organisms.

organisms that produce their own food

the third phase of mitosis, in which the chromosomes split and move apart

the diffusion of water across a semipermeable membrane

Explanation:

please mark as brainliest answer

An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

Explanation: So it would be the 1st one, Ur welcome!

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally