Question

please answer these questions very urgent​

Answer 1

Answer:

27 ka a)

28 ka b)

Explanation:

moj karo

hope this helps

Answer 2

Answer:

1) The group of materials which contain at least one bio non-degradable material is

B. cake, milk packet, wooden sticks.

because the milk packets made with the plastic.

Plastic debris, laced with chemicals and often ingested by marine animals, can injure or poison wildlife. ... Plastic buried deep in landfills can leach harmful chemicals that spread into groundwater.and it takes the long time to decompose.

2) The right atrium receives deoxygenated blood from the superior and inferior vena cavae, and from the coronary veins. It pumps this blood through the right atrioventricular orifice (guarded by the tricuspid valve) into the right ventricle.

so,B) deoxygenated blood.

I Hope it helps you ☺️