6. Describe the range of variation in the nervous systems of invertebrates. 7. Distinguish among asymmetry, radial symmetry, and bilateral symmetry.

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an