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The process of making food by green plants is called Photosynthesis. During photosynthesis by the use of sunlight and energy, carbon dioxide changes to form carbohydrates and water . The carbohydrate thus produced is Glucose which is a sugar .

Plants that absorb water and minerals from the host plant and prepare their own food with the help of their leaves are known as semiparasites. eg; Loranthus
Plants that absorb food directly from the host plants are called total parasites . eg; Cuscutta

White cane is a white stick used by the blind for safe movement . This is a hollow and light aluminium rod .

Example of epiphyte is vanda
Plants that absorb water and minerals from the host plant and prepare their own food with the help of their leaves are known as semi parasites . eg; Loranthus
Plants that absorb food diectly from the host plans are called total parasites . eg ; Cuscutta
both semi parasites and total parasites harm the host plant .

Formic acid, systematically named methanoic acid, is the simplest carboxylic acid.

The chemical composition is HCOOH.

It is an important intermediate in chemical synthesis and occurs naturally, most notably in some ants.

The word “formic” comes from the Latin word for ant, formica, referring to its early isolation by the distillation of ant
bodies. Esters, salts, and the anion derived from formic acid are called formates.

Industrially, formic acid is produced from methanol.

Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite.

Marble is typically not foliated, although there are exceptions. In geology, the term “marble” refers to metamorphosed
limestone, but its use in stonemasonry more broadly encompasses unmetamorphosed limestone.

Marble is commonly used for sculpture and as a building material.

Marble is a rock resulting from metamorphism of sedimentary carbonate rocks, most commonly limestone or dolomite
rock.

Metamorphism causes variable recrystallization of the original carbonate mineral grains.

The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals.

Primary sedimentary textures and structures of the original carbonate rock (protolith) have typically been modified or
destroyed.

The
Hypermetropia, sometimes called hyperopia, is the term used to define being longsighted. If you are hypermetropic, the image of a nearby object is formed behind the retina. This means that light is focused too far back in the eye, causing things which are close up to appear blurred.
It is acondition of the eye where distant objects are seen clearly but near objects appear blurred. This blur is due to incoming light being focused behind, instead of on, the retina due to insufficient accommodation by the lens. Minor hypermetropia in young patients is usually corrected by their accommodation, without any defects in vision.
But, due to this accommodative effort for distant vision, people may complain of eye strain during prolonged reading.
If the hypermetropia is high, there will be defective vision for both distance and near.People may also experience accommodative dysfunction, binocular dysfunction, amblyopia, and strabismus.
It can be corrected using convex lens.

The diameter of the Earth at the equator is about 43 kilometers (27 mi) larger than the pole-to-pole diameter.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another).

The forces that cause adhesion and cohesion can be divided into several types.

The inter molecular forces responsible for the function of various kinds of stickers and sticky tape fall into the categories of chemical adhesion, dispersive adhesion, and diffusive adhesion.

In addition to the cumulative magnitudes of these inter molecular forces, there are also certain emergent mechanical effects.

A centripetal force is a force that makes a body follow a curved path.

Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path.

Isaac Newton described it as “a force by which bodies are drawn or impelled, or in any way tend, towards a point as to a centre”.

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