Why is testing ideas an important par of all science and engineering practice?

Enzyme speed up chemical reaction are which type of marcomolecule? a. carbohhydrates b. protiens c. lipids d. nucleic acids

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different