The right option is; do not pass between the marker and the shore.
A white marker with black vertical stripes is a non-lateral marker which serves as navigational aids that give information and guide the vessel operators along the water areas. A white marker with black vertical stripes signal or indicate an obstruction to navigation. When a vessel operator sees a white marker with black vertical stripes, he should not pass between the marker and the shore.
You didn't really provide any possible answers here. However, it's very easy to say that the responsible actors for impulse transmission across the synapses from one nervous cell to another nervous cell is what we call neurotransmitters. These are special molecules that can have different effects when binding onto the required receptor sites.
The biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes. The biceps is the flexor, and the triceps is the extensor of your elbow joint.
Answer:
A compound, water is a liquid.
Explanation:
When elements combine (2 of them), they are called a compound.
The correct answer is the circulatory system. Hope that helps :)