Half the distance between a wave's crest and trough. A. amplitude B. crest C. electromagnetic radiation D. frequency E. longitudinal waves F. sound waves G. surface waves H. transverse waves I trough J. wavelength

Which kind of organism is a heterotroph? A. Photosynthesysers B. Producers C. Consumers D. Plants

Which of the following science related statements are observations rather than opinions? Select all that apply. Whaling should be banned. Cancer is the worst of all diseases. Ocean acidity was greater in 2010 than in 2000.

What is the significance of the atomic number, Z, above each atomic symbol in the periodic chart

How would an organism produced through the process of budding be described?

What is a scientific hypothesis? What characteristics must a hypothesis have to be useful in science?

How mant hands does spider has

Which is one reason some leaves are spiny or needle shaped

What are some current issues that involve both zoology and questions of ethics or public policy

What is it called when lava when it erupts from the surface through volcanoes.

To do this, they needed to acquire a very special internal organelle, called the chloroplast. Where did they acquire this internal organelle? (hint: it's the same place we got our mitochondria)