Highlights
How Penguins Pair Up
Randi Lynn Mrvos
Animals
Humboldt penguin, Dr. Jill Mateo, Peru, Chile, Jill, colony
HL
926
C1
English
9781683296324
Humboldt penguins use their sense of smell to distinguish between relatives and strangers to help them choose the best mate.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0.03% |
| Eiken Grade 2 | 866 | 0.81% |
| Eiken Grade 3 | 900 | 9.56% |
| Eiken Grade 4 | 600 | 14% |
| Eiken Grade 5 | 600 | 15.5% |
| Eiken Grade Pre1 | 2,868 | 0.35% |
| Eiken Grade Pre2 | 1,327 | 1.88% |
| Eiken Grade Pre2+ | 1,562 | 2.56% |
| NDL | 875 | 21.26% |
| NGSL 1 to 1,000 | 1,000 | 19.3% |
| NGSL 1,001 to 2,000 | 1,000 | 3.9% |
| NGSL 2,001 to 3,000 | 801 | 2.12% |
| NGSL Supplemental | 52 | 1.92% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |