Under a microscope, you can see that a plant cell has only half the usual number of chromosomes. what stage of the plant’s life-cycle are you witnessing?

What was the land like over 500 million years ago? what was under the sea?

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

To confirm when to exclude children from school it’s recommended that you refer to guidelines from which of the following organizations