I Have Science Homework, The Question Is The ????e? Has A Hole In It To Let Light Through

[Megan81201]

Microscopes and cells

[factor-fiction]

I assume Megan had rung a friend rather than a teacher

[Peter Pedant]

FF: I assume Megan had rung a friend rather than a teacher

erm FF that would be bf - perhaps the one helping her with her puberty homework ? Diaphragm - very useful things
Biology - mammals have one but birds [ that would be Aves ] - dont
Science - in microscopes
and also in puberty homework - I can see diaphragms are of use.

[neodarwinian]

Apature.

[factor-fiction]

It's not aperture, neodarwin ( I think that means 'hole' doesn't it)- the OP has confirmed that the answer was STAGE

[Bert]

Is this what they call "Science Homework" nowadays? No wonder this country is going to the dogs. And the teacher didn't even set the question correctly!