solve this plz both the empty columns I will follow u back and mark u as a brainlist who will solved these both columns thank you. ​

Penny and screws are metals whereas rubber, wires and bottles are non-metals.

Explanation:

Penny and screws are metals because they have shining surfaces, hard body structure and good conductor of heat and electricity while on the other hand, rubber, wires and bottles are non-metals due to soft body structure, no shining surfaces and considered as insulator means unable to conduct heat and electricity. So which substances having the characteristics of hard shiny surfaces and good conductor of heat and electric current we considered them metals.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

the correct answer is sex-linked recessive.

i just took the test