Which of the following are photosynthetic autotrophs?

1) algae

2) plants

3) all bacteria

4) some bacteria

5) arthropods

6) protists

A scientist is studying a new chemical he hopes will prevent insects from eating raspberry bushes. he sprays the chemical on a raspberry bush and places it with an unsprayed blackberry bush and some insects in a sealed room.

Select the correct answer. Which isotope is used to date ancient artifacts such as fossils? O A. carbon-12 O B. carbon-14 O c. uranium-238 OD. oxygen-16

What is the word for a type of communication that goes from cell to cell?

Earths orbit is called what

Ecosystems are named A. by the climate that is associated with the ecosystem. B. by the plants that inhabit the ecosystem. C. by the city surrounding it. D. by the country surrounding it.

What type of stress is placed on folds?

based on the table, explain why humans wouldn't be able to survive in Mars atmosphere without special equipment

Rabies is a viral disease contracted from the bite of an infected animal. Rabies bypasses many immune system defenses by traveling in peripheral neurons to reach the CNS. Which method of transport is NOT used by the rabies virus to reach the CNS? A.

How many pairs of spinal nerves are there?

Describe the 5 types of species interactions