Movement of plants

The movement of a plant in the direction of stimulus is known as tropic movement or tropism. The movement of a part of the plant towards light is called phototropism. Growth of aerial parts of a plant towards light is an example of phototropism.

BIO GEOCHEMICAL CYCLE

In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth.

GLOBAL WARMING

Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of climate change and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming. Global warming and climate change are often used interchangeably.

Animal kingdom classification

life begins from ocean and it develops from unicellular to multi cellular organisms

organ and organ systems

starts from digestive,respiratory,circulatory,excretory.reproductive system-5 systems