The statements that are true of heterogeneous mixtures are: they settle out and the proportions of solute to solvent may vary. The correct answer is option A. 1 and 2. Heterogeneous mixtures are considered mixtures wherein the components are not uniform and still retain their properties. Characteristics of heterogeneous mixtures are: the ratio of solute and solvent is not equal, the substances can be separated physically and they still retain their properties even if mixed with another substance.
17.
decreases.
it substantially increases then decreases.
18.
to the same organisms because oak leaves come from oak trees.
19.
Pyramid B
Pyramid A does not accurately represent the supply of food for the caterpillars.
The famous asphalt deposits found in los angeles in california are known as the La Brea Tar Pits
Explanation:
*About ten thousand years ago, the natural asphalts has seeped up from the ground .
* Around these asphalt pits , the hancock park was formed .
The asphalt deposits found here are often covered with lots of dust ,leaves and water. The place also houses a museum called the George C Page museum .The research of the dead animals found millions of years ago happens in this museum .The dead animals over millions of years have become fossils here .
<span>An environmental factor that causes a population to decrease is death</span>
<span>Cytosol is the mixture of water and other molecules found inside the cell.</span>
