Answer:
The other systems I am aware of are...
Immune System: fights off disease-causing germs and other harmful substances
Respiratory System: works to move oxygen throughout the body and clean out waste gases like carbon dioxide
Cardiovascular System: delivers oxygen, nutrients, hormones, and other important substances to cells and organs in the body using blood
Nervous System: transmit signals between different parts of the body so we can move our muscles
Digestive System: breaks down food into small molecules, which are then absorbed into the body
Excretory System: removes waste from the human body
Answer:
Molecules in a liquid have enough energy to move around and pass each other. ... the thing you add to the water is pushed around by the water molecules. Since the molecules in warm water move around faster, the material spreads out quicker in the warm water than in the cold water.
Explanation:
"In the early days of germ theory, contagious diseases
were thought to be caused by fungi or bacteria. In the 1890's, Dmitri
Ivanovski filtered extracts from diseased tobacco plants and discovered
that the disease could be transmitted to new plants through the
filtrate. He concluded that the disease was caused by particles smaller
than bacteria; the tobacco mosaic virus", is partially correct. Dmitri
Ivanovski discovered that filtered extracts from diseased tobacco plants
could be transmitted to new plants through the filtrate. However, it
was Dutch microbiologist Martinus Beijerinck who, while replicating
Ivanovsky's experiments, proved that the filtrate contained a new
infectious agent. Beijerinck named this agent a virus.
Answer:
There is gravitational attraction between them
