answer the following questions(any5)
1 what is reproduction
2 which bird cannot fly?why
3 what is first aid ? what thing should be kept in the first aid box
4 what is soil ?explain its three layer
5 define mass and unit of mass
Answers
Answer:
1 Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent" or parents. Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction.
2 Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground.
3small, medium and large sterile gauze dressings. at least 2 sterile eye dressings.First aid is the first and immediate assistance given to any person suffering from either a minor or serious illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery. triangular bandages. crêpe rolled bandages.
4The soil is the topmost layer of the earth's crust mainly composed of organic minerals and rock particles that support life. ... The different layers of soil are: Topsoil. Subsoil. Parent rock.
5Mass (symbolized m) is a dimensionless quantity representing the amount of matter in a particle or object. The standard unit of mass in the International System (SI) is the kilogram (kg). ... When expressing large or small masses, prefix multipliers are used.
Explanation:
1.The production of new individual by their parents is known as reproduction.
2.Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground.
3.First aid is the first and immediate assistance given to any person suffering from either a minor or serious illness or injury, with care provided to preserve life, prevent the condition from worsening, or to promote recovery.
A basic first aid may contain:
plasters in a variety of different sizes and shapes.
small, medium and large sterile gauze dressings.
at least 2 sterile eye dressings.
triangular bandages.
crêpe rolled bandages.
safety pins.
disposable sterile gloves.
tweezers.
4.Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
The simplest soils have three horizons: topsoil (A horizon), subsoil (B horizon), and C horizon.
5.Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.
Mass (symbolized m) is a dimensionless quantity representing the amount of matter in a particle or object. The standard unit of mass in the International System (SI) is the kilogram (kg). ... When expressing large or small masses, prefix multipliers are used