Слайд 2
![Corals are marine invertebrates](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-1.jpg)
Corals are marine invertebrates
Слайд 3
![Growth of coral is usually even in favorable conditions no](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-2.jpg)
Growth of coral is usually even in favorable conditions no more
than 1 cm per year in the longitudinal direction, so the formation of an average reef can take centuries, islands - millennia.
Слайд 4
![Corals are close relatives of anemones, although they have a fundamental difference from them.](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-3.jpg)
Corals are close relatives of anemones, although they have a fundamental
difference from them.
Слайд 5
![Corals have a bright color due to algae. Their lives depend on each other.](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-4.jpg)
Corals have a bright color due to algae. Their lives depend
on each other.
Слайд 6
![Unfortunately today the coral reefs are dying out. Water pollution,](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-5.jpg)
Unfortunately today the coral reefs are dying out. Water pollution, careless
gathering of corals, fishing with dynamites and much more harm corals. And warming water leads to the destruction of algae, so coral reefs lose their color.
Слайд 7
![Man must respect the environment. We must preserve nature for future generations.](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/8912/slide-6.jpg)
Man must respect the environment. We must preserve nature for future
generations.