Question

1. what is the earths closed system?

1. ____________ is the most basic ingredient on earth.

1. what are the 3 parts of the water cycle __________, ________, __________.

1. the most common element in earths atmosphere is ____________.

1. what are the four fundamental building blocks (elements) of life

a.
b.
c.
d.

1. label the photosynthesis equation with the 4 compounds in the box.

water
glucose
oxygen
carbon dioxide

6co₂ + 6h₂o →photosynthesis c₆h₁₂o₆ + 6o₂

1. please write 4 sentences about the process of photosynthesis below.

Explanation:

Question 18:

The Earth's closed system (in terms of matter) means matter (like elements, compounds) is mostly recycled within Earth; energy (solar) enters, but matter like rocks, water, gases aren't lost to space (except minor exceptions). So the Earth is a closed system for matter (energy is open).

Water is the most basic and essential ingredient on Earth for life, ecosystems, and many physical processes (like weathering, hydrologic cycle). It's vital for all known life forms.

The water cycle has three main parts: Evaporation (liquid to gas, from oceans/lakes), Condensation (gas to liquid, forming clouds), and Precipitation (liquid/solid falling as rain, snow, etc.).

Answer:

The Earth is a closed system for matter (matter is recycled internally, energy from the Sun enters, but significant amounts of matter do not leave Earth's system).

Question 19: