A web of inter-connection exists in nature
I have seen no ladybirds this year. Two years ago the ladybirds were everywhere in Colchester, now there are none. The long winter in the UK killed most of the ladybird population, which came out of hibernation too early, then starved to death. Two extra years of long winter may result in all UK ladybirds going extinct. The ladybird-climate dilemma reveals how closely connected all plants and animals are to climate.
Yellowstone National Park in the USA reintroduced wolves, which had a hidden benefit to grizzly bears. The wolves reduced the numbers of elk which had been feeding on the berry plants that grizzly bears depended on to survive the winter.
Ignorant people label nuisance plants as weeds or animals as pests, they fail to realise that all nature is inter-connected, something benefits from another. People destroy wasps, but wasps keep insects that attack crops and vegetables under control. The missing ladybirds means growers lost an ally against aphid and black fly in the UK.
Every plant or animal lost undermines something else, a loss of an entire species in an ecosystem is a disaster. Humanity is unable to see the direct connection between the loss of one animal or plant and the impact on another until it is too late.