Samuel is an 8-year-old boy. he has difficulty solving numerical problems. hence, he is not able to solve any of the math tests given by his teacher. his teacher gave him extra assignments and made him attend some remedial classes so that he can improve, but these did not . his parents finally took him to a doctor, and the doctor diagnosed him with a learning disability called or developmental arithmetic disorder.

The correct answer is - Dyscalculia.

Explanation:

Dyscalculia is a learning disability where the person has difficulty when there is problem-solving like math subject. These people can do well in other subjects but have difficulties in mathematics.

In this scenario, Samuel has a problem in solving Mathematics problems clearly shows that he have Dyscalculia.

Thus, the correct answer is - Dyscalculia.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

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