How to merge similar output generated from two different queries

Hello, I am working with a huge oracle table, where I need to merge the result output generated by querying two different conditions, I cannot use the AND or OR operator for querying as I need all the records which are there in the results. Can anyone pls guide how I can do this for the below mentioned two queries.

Query 1:

select prod.prod_id, prod.prod_name, cust.cust_year_of_birth, 
	sum(sl. amount_sold) as tot_sales
		from DWU6.products prod, DWU6.customers cust, DWU6.sales sl
		where prod.prod_id = sl.prod_id and cust.cust_id = sl.cust_id
			and cust.cust_year_of_birth < 1950
		group by CUBE(prod.prod_id, prod.prod_name, 
			cust.cust_year_of_birth);

Query 2:

select prod.prod_id, prod.prod_name, cust.cust_year_of_birth, 
	sum(sl. amount_sold) as tot_sales
		from DWU6.products prod, DWU6.customers cust, DWU6.sales sl
		where prod.prod_id = sl.prod_id and cust.cust_id = sl.cust_id
			and cust.cust_year_of_birth >= 1950
		group by CUBE(prod.prod_id, prod.prod_name, 
			cust.cust_year_of_birth);