Week 1
Week 2
Week 3
Week 4
Week 5
100

To have enough money to pay for.

Afford

100

To feel nervous or worried about something that may happen in the future

Anxious

100

A person who studies nature

Naturalist

100

Things that are made or invented for a particular purpose

Devices

100

To move forward or make progress

Advance

200

Money set aside for the future

Savings

200

To come or bring together

Assemble

200

An unexpected meeting

Encounter

200

Declared as one's own

Claimed

200

A careful examination or study of something

Analysis 

300

A chance of loss or harm

Risk

300

To find your way over or through an area

Navigate

300

Steep

Sheer

300

To act in a way that shows great interest or excitement

Enthusiastically 

300

To mention something as proof or support

Cite

400

Payments received for work done

Wages

400

Choices or alternatives

Options

400

Showed; was a sign of

Indicated

400

An important advance 

Breakthrough

400

An opposing or disagreeing point of view

Counterpoint

500

Difficult to get or hard to find

Scarce

500

To figure out the meaning of something that is difficult to read or understand

Decipher

500

Very unusual or impressive

Spectacular

500

Papers that give a person or company the right to use, make or sell new inventions.

Patents

500

Problems or disadvantages

Drawbacks