Biology

It sends messages that control all the systems in the body.

The nervous system controls almost every action in the human body. It controls the heart beat, your adrenaline levels, and many other things which can effect an organism.

viruses are not alive. APEX

Anaphase

Nutrients are absorbed into the bloodstream. Starch is broken down by enzymes.

Macromolecules are broken down.

The tissue formed once mitosis of an OVUM

A few days after fertilization. apex:)

The circulatory system is its own system. There are not systems in the circulatory system.

When there are limited resources.

when there is competition for resources. apex :)

There must be genetic variation in the population

The system must not be in hardy-weinberg equilibrium.

resources must be limited in the ecosystem

Small intestine

Esophagus - APEX

The parts of the alimentary canal are:

The Mouth

The Pharynx

The Stomach

The small intestine

The large intestine

Hormones.

It helps the plant reproduce in dry environments.

The endocrine system sends messages using hormones. It delivers messages from the nervous system to the excretory system. It tells the excretory system when the blood is out of balance.

Depends on when you consider it a child. First it's a Zygote, a fertilized egg, and then a blastocyst. Medically it's not a child until it's born. But if we start with embryo you can read all about it in the link below. Someone wrote blood starts pumping and arms starts to develop but that is weeks later.

Blood pumps through the body.

or

Rhythmic breathing movements

A short observation period.

A few Days after Fertilization. (apex)

A mutation in a sex cell can be passed on to an offspring. A mutation in a non-sex cell cannot be passed on to an offspring.