Answer:
In science, a variable is any item, factor, or condition that can be controlled or changed
Answer:
The answer is A
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
They would die because they need amylase to disgust food
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Hollow bones are always a disadvantage because it means that they are less sturdy and easier for predators to break.
Organisms show dominant traits in most cases, hope this helps :)
