E
E. Short Answer Type-l Questions:
1. Why do birds migrate?
v 2. What is meant by'adaptation'?
34 What are big cats?
4. What is humidity?
5. What is meant by weather of a place?
6. How do short ears and tail help a polar bear?
7. How is relative humidity expressed?
Answers
Answer:
to lay eggs to search food 2. to adapt to the environment
Explanation:
Why do birds migrate?
⠀⠀⠀⠀⠀⠀migratory birds fly hundreds and thousands of kilometres to find the best ecological conditions and habitats for feeding, breeding and raising their young. When conditions at breeding sites become unfavourable, it is time to fly to regions where conditions are better. There are many different migration patterns.
What is meant by'adaptation'?
⠀⠀⠀⠀⠀⠀Adaptation is the physical or behavioural characteristic of an organism that helps an organism to survive better in the surrounding environment.” Living things are adapted to the habitat they live in. This is because they have special features that help them to survive.
What are big cats?
The term "big cat" is typically used to refer to any of the five living members of the genus Panthera, namely the tiger, lion, jaguar, leopard, and snow leopard, as well as the non-pantherine cheetah and cougar. Except for the latter three, these species are able to roar.
What is humidity?
Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity depends on temperature and the pressure of the system of interest.
What is meant by weather of a place?
Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy. Weather is driven by air pressure, temperature, and moisture differences between one place and another.
How do short ears and tail help a polar bear?
The polar bear's small ears and tail offer less surface area than large ears or tails, and help maintain body warmth. Fat. Polar bears have a layer of fat that can be four inches (10 cm) thick. Although their fur is the primary source of insulation, the fat helps keep heat in as well.
How is relative humidity expressed?
It is expressed as grams of moisture per cubic meter of air (g/m3). Relative humidity also measures water vapor but RELATIVE to the temperature of the air. It is expressed as the amount of water vapor in the air as a percentage of the total amount that could be held at its current temperature.