Which domains contain organisms that lack a membrane-bound nucleus?a. Archaea & Bacteria b. Archaea & Eukaryac. Bacteria & Eukaryad. Eukarya & Animaliae. Archaea & Animalia

Archaea and Bacteria lack a membrane-bound nucleus.

Explanation:

Archaea, bacteria lack a membrane-bound nucleus. Meaning, they are both prokaryotes. Eukaryotes and Animalia are the opposite. They have membrane-bound nuclei.

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

the answer to your question is tooth decay.