This printable crossword puzzle on the topic of Ecology & Evolution has 17 clues. Answers range from 3 to 9 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
A vertebrate animal group which includes toads and newts
A plant group which includes pines and Christmas trees
Almost all mammals have this on their skin
Scaly, mostly land-based vertabrate animals (R . . . . . . . )
Oak trees grow these cupped nuts to reproduce
Tall, slender trees found around RJS and surrounding areas
This plant group includes the simplest plants of all, which are often slimy
A flightless bird found in colder climates
All living things do this as they get bigger and older
The direction in which light travels
The part of the body which collects light to see
Light does this when it bounces off an object like a mirror
These are created when the light is blocked by an opaque object
The name given to a place where light is emitted or made
A transparent material which can bend (refract) light
An image which causes a trick of the eyes is an 'optical . . . . . . . .'?
A curved piece of glass or plastic which bends light and can magnify images