In general,dead or living parts of plants need to be removed to improve the shape or growth of the plant.

VOA: special.2009.07.14

He said the darkening of the Martian surface during some times of the year was caused by the growth of plants.

VOA: special.2010.07.11

Bones,hair,feathers, even the remains of plants have been found in deep, dry caves high in the rock walls.

VOA: special.2009.10.07

Warming temperatures are also threatening the many kinds of plants and animals that live in this mountain ecosystem.

VOA: special.2009.04.22

Others are chosen for their smell. Generally, herbs come from the green leaves of plants or vegetables.

VOA: special.2009.05.19

They are now discovering strange, new species of plants, animals and organisms surviving near hot currents that come out of the ocean floor.

VOA: special.2009.01.13

Scientists use the word biodiversity to describe the existence of many kinds of plants,animals and other organisms.

VOA: special.2010.05.25

Their ancient languages contain a great deal of information about environmental systems and species of plants and animals that are unknown to scientists.

VOA: special.2009.12.02

Several kinds of plants and animals are found in the canyon and nowhere else on Earth.

VOA: special.2009.10.07

Mister Cooper says the substances build up in the cells of plants, animals and human beings.

VOA: special.2009.06.23

Straw is the dried stem part of plants such as wheat, millet and sorghum.

VOA: special.2009.01.12

Many kinds of plants and animals live in Kruger, including the famous "Big Five."

VOA: special.2009.08.19

They say the natural balance of plants and animals has been destroyed.

VOA: special.2009.06.30

Scientists also have found pollen from many different kinds of plants.

VOA: special.2010.04.07

He had never seen so many different kinds of plants.

VOA: special.2009.05.23

She studied philosophy,Latin and the science of plants and rocks.

VOA: special.2010.07.18

Generally,herbs come from the green leaves of plants or vegetables.

VOA: special.2010.06.01

Spices come from other parts of plants and trees.

VOA: special.2010.06.01

The marsh is home to a vast array of plants,fish, reptiles like the North American Alligator, and mammals.

VOA: standard.2010.05.09