Gurdon inserted the nucleus of a differentiated tadpole cell into an enucleated frog egg, meaning the nucleus was removed. The frog egg then developed into a normal frog embryo. Which conclusion is supported by these results?
O A DNA in the nucleus of the egg cell controls all cell activities.
B. DNA outside the nucleus of the egg cell controls some cell activities
OC. Factors in the nucleus of the egg cell affect cell development.
D. Factors in the cytoplasm of the egg cell affect cell development,

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers