After completing meiosis ii, human sex cells have a total of chromosomes.

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

The body is protected against harmful flu viruses by

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy