Sunflowers are tall plants with large ,flat flowers . They come from north America but grow in other parts of the world too. there are several kinds of sunflowers , but the above kind of sunflowers have bright yellow petals.
Seeds are planted in the ground by spring , when the soil is warm and damp. Inside the seed is a tiny plant which soon begins to grow. the roots of the plant push down through the soil. They are covered in tiny hairs which take in water.A green shoot grows upwards from the sunflower seed.during the first 2 weeks the green shoot grows and opens the first leaves.they use sunlight , air and water to make food for the plant.(3-4)The plant grows taller and more leaves grow at the tip of the stem.the stem is covered with fine hairs to stop insects from climbing up it.
(4-6)The leaves grow bigger.under the ground the roots grow longer . thy take in water and minerals the plant needs to stay alive and go on growing.A large bud has formed at the end of the stem.it is protected by pointed green bracts that look like small leaves. (6-8) The bracts unfold and the bud begins to open . underneath the bracts they are lot of yellow petals . (9 weeks) the plant grows taller and taller.the flowers open out.each Sunflower flower head contains many tiny flowers.
A beach is a geological landform along the shoreline of an ocean, sea, or lake. It usually consists of loose particles which are often composed of rock, such as sand, gravel, shingle, pebbles, waves or cobblestones. The particles of which the beach is composed can sometimes instead have biological origins, such as shell fragments or coralline algae fragments.
Wild beaches are beaches which do not have lifeguards or trappings of modernity nearby, such as resorts and hotels. They are sometimes called undeclared, undeveloped or undiscovered beaches. Wild beaches can be valued for their untouched beauty and preserved nature. They are most commonly found in less developed areas such as Puerto Rico, Thailand or Indonesia.
Beaches often occur along coastal areas where wave or current action deposits and reworks sediments.
Rivers of Sri Lanka |
Rivers Mahavali Rever (Ganga) is the largest of the 103 river basins found in Sri Lanka. It covers about 16% of the island's total area. The river itself has a winding course, rising about 50 km south of Kandy and flowing north then north-east to the sea near Trincomalee covering a distance of 320 km. It is the only perennial river to cross the dry Zone. Sri Lanka�s all perenial revers are called Ganga,while seasonal streams are called Oya in Sinhala or Aru in Tamil. A number of rivers have now been developed both for irrigation and power. The Victoria project on Mahavali Ganga is one of the largest in Asia. |
No comments:
Post a Comment