Age is a factor of a. immunization

b. stemming

c. symbiosis

d. resistance

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes

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

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel