Environmental problems

____________________ science explores our ____________________ and how we are changing it . From ____________________ change and the ____________________ crisis to habitat ____________________ and pollution , humanity is grappling with many environmental ____________________ .

Half of the migratory animal ____________________ are in ____________________ - many face ____________________ . Hundreds of migratory species ? from ____________________ whales to wandering ____________________ ? are ____________________ threat because ____________________ human ____________________ . Billions of animals , ____________________ to more ____________________ 2000 species , travel ____________________ distances every year for a ____________________ of reasons , such as to find food or a place to ____________________ . Human ____________________ is the biggest ____________________ behind these ____________________ trends . Overfishing , pollution and ____________________ loss from ____________________ and urbanisation all ____________________ species at risk . Climate ____________________ is a problem too .

? But there are ____________________ to ____________________ challenges , ? says team member Kelly Malsch
? To make the ____________________ of migratory species ____________________ , most , if ____________________ all , of these threats need to be addressed at the ____________________ times at the right ____________________ , during which large - scale ____________________ and collaboration is ____________________ the key . ?

Air ____________________ is changing the ____________________ of flowers and confusing ____________________
Insects may be finding it ____________________ to locate flowers because the ____________________ molecules released by the flowers smell ____________________ after they react with ____________________ in the air .

Insects may be ____________________ to locate flowers because air pollutants are ____________________ the chemical ____________________ responsible ____________________ their enticing ____________________ scents .

Noise pollution , for ____________________ , has been shown to impact birdsong and may be linked ____________________ an increase in whale ____________________ . ____________________ pollution , meanwhile , can ____________________ a range of animals , including ____________________ birds and sea ____________________ .

They focused ____________________ ozone and nitrate radicals , pollutants created by the interaction of vehicle ____________________ with gases in the ____________________ . Both are known to react with compounds given off by flowers , ____________________ their smell .