|
|
|
3
|
plow field in curves
|
|
5
|
plants on hills with flat steps
|
|
6
|
plant releases water vapor
|
|
7
|
plant reacts to its environment
|
|
8
|
different crops are planted in the same field
|
|
9
|
leave old crop on field to cover soil
|
|
10
|
oxygen taken in and carbon dioxide and water released
|
|
12
|
roots keep soil in place
|
|
|
|
|
|
|
1
|
the male part of flower where pollens made
|
|
2
|
female part of flower where pollen lands
|
|
4
|
planting trees to protect soil
|
|
11
|
makes soil more or less fertile
|
|
13
|
contains eggs
|
|
14
|
female part of flower contains ovules devolps into fruit
|
|
|
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