Write Answers in details - (Marks 30)
1) What things should be considered by people looking for new seed varieties?
2) Describe different activities used in preparing food? e.g. roasting.
3) How is it decided how old the pictures drawn by the primitive humans living in the caves are?
4) What physical harm is caused by eating junk food and how?
5) What are the advantages and disadvantages of living near volcanic areas?
6) Which specific part in the design of the bug zappers (mosquito bats) causes mosquitoes to die?
7) What are the ways to check the authenticity of photos, videos used in the media?
8) What is the difference between asteroids, comets and meteors?
9) What nutrients do you get when you eat dal-cooked rice-ghee-salt and lemon all mixed together? What other food mixture would you recommend to get the same nutrients?
10) How do you determine the boundaries of a sea or a ocean?
Answers
Answer:
1. Characteristics such as trueness to variety, germination percentage, purity, vigor, and appearance are important to farmers planting crops and to homeowners establishing lawns and gardens.
2. Baking, Broiling, Frying, Microwaving, Roasting, Hot Smoking, Chemical techniques, Mechanical techniques.
3.Using a microscope, a laser and a scanning electron microscope, they determined that the marks were on top of the rock and that they were made from red ocher, a type of natural pigment that was often used to make prehistoric cave paintings.
4. One of the most common side-effects of consuming junk foods is increased obesity. It's composition of loads of sugar, calories and fats contribute to weight-gain. Obesity can cause many medical issues like diabetes, joint-pain and heart diseases.
5. Advantages
• Fertile soil when lava weathers e.g. Indonesia
• Tourist attractions e.g. Yellowstone •
National Park, USA
• Minerals e.g. sulphur
• Hot springs for bathing e.g. Iceland
• Heat used to generate electricity e.g. geothermal power (Iceland)
• Mud used for skin care
New land e.g. Surtsey (Iceland)
Disadvantages
• Dangerous gases
• Loss of homes, animals and crops
• Diseases and Fires
• Avalanches,mudflows (lahars) and floods
• Loss of wildlife, trees and plants
• People live in fear.
6.External traps Mosquitoes are attracted to carbon dioxide and water vapor in the breath of mammals, not ultraviolet light. However, there are now bug zappers that emit carbon dioxide or use an external bait, such as octenol, to better attract biting insects into the light.
7. Fake information online, be it on the topic of migrants or war in Syria – or, in fact, pretty much any story that’s in the news, is an increasingly common phenomenon. Social media networks in particular are inundated with photos and videos that are either doctored or taken out of context. But although media outlets can’t always be on the ground to verify every photo that comes their way, there are dozens of tools and techniques to help you cross-check images and avoid falling for the fakes.
1- Is it ever possible to be 100% sure ?
2- Two types of analysis
3- Step One: When was the image taken?
4- Google image
5- EXIF Image Data
6- Geolocalization: A useful tool, but it comes with a catch
7- Take a closer look at the image
8- Google Maps, Google Earth, and Google Street View
9- Who’s the author?
10- Use social media networks to verify social media networks.
8. Comet: A body of ice, rock and dust that can be several miles in diameter and orbits the sun. Debris from comets is the source of many meteoroids. It originates from a comet or asteroid. Meteor: A meteoroid that enters the earth's atmosphere and vaporizes.
9. Mix equal quantities of lime juice, glycerin and rose water. In case you have to stay, blink often and massage the closed eyes gently.
10. The borders of the oceans are the limits of the Earth's oceanic waters. ... It is sometimes considered a sea or estuary of the Atlantic Ocean. The International Hydrographic Organization.