The air spaces in the layer of a leaf connect with air through stomata in the epidermis of the leaf.

The air spaces in the spongy layer of a leaf connect with air through stomata in the epidermis of the leaf.

Explanation:

The cells in the spongy layer of the leaf contain less chloroplast but act as storage for product of photosynthesis like sugars,amino acids and bases.

The air spaces in the spongy layer connect with air through stomata in the epidermis of the leaf. The air spaces in spongy layer allow diffusion of carbondioxide and oxygen and stomata which is a small pores in the epidermis allow carbondioxide and oxygen to enter and leave the leaf.

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explanation:

i still can't find this

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.