Biology > MARK SCHEME > Mark Scheme (Results) Summer 2022 Pearson Edexcel International GCSE In Biology (4BI1) Paper 2B (All)

Mark Scheme (Results) Summer 2022 Pearson Edexcel International GCSE In Biology (4BI1) Paper 2B

Document Content and Description Below

Question Number Answer Mark 1 (a)(i) methane / nitrous oxides / CFCs / water vapour / eq (1) Accept other correct named greenhouse gases Reject carbon monoxide 1 Question Number Answer Add... itional guidance Mark 1 (a)(ii) 1.8 x 1013 (3) Accept 18 000 000 000 000 or 18 trillion for two marks Accept 18 x 1012 for two marks Accept 18 or (727 + 37 - 746) or 18 with other incorrect standard form for one mark Example of calculation:  727 + 37 - 746 = 18  x 1 000 000 000 000  conversion to standard form 3Question Number Answer Additional guidance Mark 1 (a)(iii) An answer that makes reference to two of the following.  ice (caps) melt / glaciers melt / eq (1)  flooding / sea level rises / eq (1)  loss of habitat / desertification / droughts (1)  extinctions / disrupted food chains / migration of species / damaged ecosystems / decreased plant yields / decreased productivity / eq (1)  destruction of coral reefs / coral bleaching / eq (1)  spread of disease / pests / pathogens / eq (1)  extreme weather / climate change / changes in weather patterns / eq (1) [Show More]

Last updated: 2 years ago

Preview 1 out of 21 pages

Buy Now

Instant download

We Accept:

We Accept
document-preview

Buy this document to get the full access instantly

Instant Download Access after purchase

Buy Now

Instant download

We Accept:

We Accept

Reviews( 0 )

$7.00

Buy Now

We Accept:

We Accept

Instant download

Can't find what you want? Try our AI powered Search

277
0

Document information


Connected school, study & course


About the document


Uploaded On

Feb 21, 2023

Number of pages

21

Written in

Seller


seller-icon
A-LEVEL GURU

Member since 3 years

19 Documents Sold

Reviews Received
1
0
0
0
0
Additional information

This document has been written for:

Uploaded

Feb 21, 2023

Downloads

 0

Views

 277

Document Keyword Tags

Recommended For You

Get more on MARK SCHEME »

$7.00
What is Scholarfriends

In Scholarfriends, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 FAQ
 Questions? Leave a message!

Follow us on
 Twitter

Copyright © Scholarfriends · High quality services·