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Some plants like black walnuts do not want competition from other plants. So the black walnut grows a poison called juglone that kills other plants in the area. Buckthorn is another plant that does this.

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Does activity of humans affect a plants growth?

Yes. Humans pollute the earth which hurts plants, they cut down trees which kills them, spray poisons on plants to kill plants they don't want, and genetically modify fruit and vegetable plants with poison inside them to kill bugs.


What is ingested poisons?

Ingested poisons include foods, alcohol, medication, household and garden items, and certain plants


What chemical that affect a living organism?

These are toxins and poisons.


How does mercury affect water?

Mercury doesn't really affect our water, it affects and poisons us and other life in the water. It is a poison that interferes with the brain and nervous system.


How does pollution affect our environment?

Pollution harms the environment. It clogs up the water and poisons it so the fish can't live and other animals can't drink it. It poisons the air so nobody can breathe. It poisons the land so nothing will grow.


WHAT CHEMICAL CAN AFFECT A LIVING ORGANISM?

These substances are poisons and toxins.


How plants can be harmful to humans?

Plants can be dangerous to humans due to poisons or allergies.


In easy language what is pollution?

Pollution is essentially poisons in the air we breathe, the water we drink and the soil we grow our food in.The air we breathe, when clean, is made up of oxygen, nitrogen and argon - with abit of a few other gases. All these gases have no odour. When gases that smell bad, or are poisonous to animals or plants we say the air is polluted.Pure water is colourless and tasteless. When it is cloudy, smells bad, or tastes bad we say it is polluted. There can be poisons in the water that don't smell or taste bad, these make the water polluted as well.Soil is a very complicated mixture of powdered rocks, dead plants, insect colonies, air and water. When it contains poisons that affect the ability for plants to grow, we say it is polluted.


Does all poison affect humans?

No. Organophosphate pesticides kill insects not humans because humans can break them down. But other organophosphate poisons called nerve gases kill both insects and humans. This same effect is true for many other poisons, some organisms can break them down while others can't. Bacteria and some plants are killed by antibiotics that damage cell walls. But animals and fungi are unaffected by antibiotics as their cells lack cell walls.


How does mercury affect our water?

Mercury doesn't really affect our water, it affects and poisons us and other life in the water. It is a poison that interferes with the brain and nervous system.


Why do plant have thorns or poisons?

Plants have developed thorns or poisons as a defense mechanism against herbivores or predators. Thorns can deter animals from feeding on the plant, while poisons can make the plant unpalatable or even harmful if consumed. These adaptations help plants survive and reproduce in their environment.


How do plants and animals affect their environment?

Plants and animals affect their environment directly. This is what forms the biodiversity as plants will provide food for the animals and they both need each other for the gaseous exchange.