Planet Solar is the world’s largest solar-powered boat. The solar panels on its deck contain silicon, which is a metalloid. List at least four properties of silicon and other metalloids.

Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular. Where is Leslie's error? Plants do not make their own food..

for six years an artificial fertilizer is used on a apple orchard the orchard is next to a stream which empties in to a slat water bay during the last 5 years researchers have observed an increase in algae in the bay they have also sampled fish populations in the bay each year apex...

One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds, they occupy different niches.

Rank the following cities in order of earthquake risk from high risk to low risk:

Fungi are a food source for animals and humans. Fungi produce oxygen to breathe. Fungi destroy rocks and minerals. Fungi are natural recyclers.

D. The population density of beetles will decrease.

The nerves and muscles communicated with each other to trigger her reflexive response…

Carbon dioxide with the help of diffusion reach the other cells in the leaf and the oxygen which is produced during the process of Photosynthesis is diffused out of the leaf. Hence, diffusion is the simple process by which gaseous exchange takes place.

The lining of the trachea consists of a type of tissue called pseudostratified (ciliated) columnar epithelium.

He solved Ptolemy's model by providing elliptical orbits.he determined that planets travels faster when closer to sun.