Crossing-over during meiosis leads to genetic diversity. true or false

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

Which structure secretary’s hormones directly into the bloodstream without using a duct a) lacrimal gland b) adrenal gland c) oil gland d) salivary gland