Pollination in plants is the process where pollen is transferred from the anther, the male part of a flower, to the stigma, the female part of a flower.

Environment is a place where different things are such as a swampy or hot environment. It can be living (biotic) or non-living (abiotic) things. It includes physical, chemical and other natural forces. They constantly interact with it and adapt themselves to conditions in their environment. Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. But it can be roughly divided into two types such as (a) Micro environment and (b) Macro environment. ... (c) Physical environment refers to all abiotic factors or conditions like temperature, light, rainfall, soil, minerals etc.

The human body is the structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organ systems. They ensure homeostasis and the viability of the human body. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.

When we say that something is in motion, we usually mean that it is moving. But motion has a special meaning in science. In science, motion is a change in position compared to a place or an object that is not moving. The place or object that is not moving is called the frame of reference.

In the ball and socket joint, one end of the bone has a round shape like a ball which fits into a socket in the other bone. The ball type end of one bone can turn freely in the socket of the other bone. It occurs at the shoulder joints and the hip joints.

Germination is the process by which an organism grows from a seed or similar structure. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, ferns, bacteria, and the growth of the pollen tube from the pollen grain of a seed plant.

Health is "a state of complete physical, mental, and social well-being and not merely the absence of disease" according to the World Health Organization (WHO). Physical is about the body. Mental is about how people think and feel.

Germination is the process of seeds developing into new plants. ... When water is plentiful, the seed fills with water in a process called imbibition. The water activates special proteins, called enzymes, that begin the process of seed growth. First the seed grows a root to access water underground. 

Seeds wait to germinate until three needs are met: water, correct temperature (warmth), and a good location (such as in soil). During its early stages of growth, the seedling relies upon the food supplies stored with it in the seed until it is large enough for its own leaves to begin making food through photosynthesis.

Rice being a semi-aquatic crop has been known to grow well in good rainfall and sunlight.

In India, a lot of rainfall takes place during monsoon and summer. On the other hand, it is not the case in winter.

Thus, it is advisable not to grow rice in winter season in India.

A polar circle is a geographic term for a conditional circular line (arc) referring either to the Arctic Circle or the Antarctic Circle. ... On Earth, the Arctic Circle is located at a latitude of 66°33′48.1″ N, and the Antarctic Circle is located at a latitude of 66°33′48.1″ S. The polar circles are located near the poles of the earth, at 66.6° N and S latitude. These are called the Arctic Polar Circle and the Antarctic Polar Circle

The scattering or spreading of seeds to different places is called seed dispersal.

If all seeds of a plant fall under the parent plant they will grow crowded together and many will die because of lack of space or air, water, sunlight and minerals. Therefore, it is better seeds getting scattered far and wide and have a better chance of growing in a suitable place without over crowding. dandelion seed dispersal

Because of the finite speed of light, when you gaze up into the night sky, you are looking into the past. The bright star Sirius is 8.6 light years away. That means the light hitting your eye tonight has been traveling for 8.6 years. Put another way: When you look at Sirius tonight, you see it as it was 8.6 years ago.

Adaptation: The changes in the feature or behavior of an organism that help it to survive in its habitat is called adaptation.

The definition of air pressure is the force exerted onto a surface by the weight of the air. An example of air pressure is the average sea-level air pressure of 101.325 kPA. The standard, or near-average, atmospheric pressure at sea level on the Earth is 1013.25 millibars, or about 14.7 pounds per square inch. The gauge pressure in my automobile tires is a little more than twice that value. Air pressure is caused by the weight of the air molecules above. Even tiny air molecules have some weight, and the huge numbers of air molecules that make up the layers of our atmosphere collectively have a great deal of weight, which presses down on whatever is below.

In scientific terms, a food chain is a chronological pathway or an order that shows the flow of energy from one organism to the other. In a community which has producers, consumers, and decomposers, the energy flows in a specific pathway. Energy is not created or destroyed. But it flows from one level to the other, through different organisms.

• Herbivores or herbivorous animals are those animals which feed on plants, leaves, fruits and other natural food for nutrition. They are known as primary consumers and lie at level 2 in the food chain. Cow, goat, giraffe, sheep, zebra, etc are herbivores.
• Carnivores or carnivorous animals rely on other animals for their food. These animals have several adaptations that help to hunt prey. For instance, most big cats such as lions and tigers have robust bodies, accompanied by powerful jaws capable of crushing bones.
• Omnivores are organisms that feed on different types of food of plant and animal origin. Humans consume different varieties of plant and animal food products and are hence considered as omnivores.