Question

Chameleon skin....(contain) colour.....(cause) substances called 'Pigments' that change under certain conditions. The change is.....(actual) determined by........(environment) factors such as light and temperature. right forms of the verb

Answer 1

Here's your answer;

contains
causing
actually
environmental

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Answer 2

Chamelon skin contains colour causing substance is called pigment that change under certain conditions. The change is actually determined by environment factors such as light and temperature