A mature seed consists of two essential parts – the seed coat and the embryo. Seed coat: The outer covering of the seed is known as seed coat. The seed coat develops from the integument of the ovules. The seed coat is made of two layers – the outer layer is called the testa and the inner layer is called tegmen.
C. plants don't need oxygen, they need carbon dioxide and PRODUCE oxygen. Animals DO. Need oxygen, I mean.
Carbon dioxide is what humans exhale, giving trees carbon dioxide will produce oxygen
Answer:
Explanation:
When a solid is heated the particles started to vibrate faster and when it vibrate faster the outer layer breaks down and change into liquid.So,a solid change into liquid when heat is added.
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