Which one of these statements in relation to the function $f(x)=x^3+x^2-1$ is false?

The graph of $f(x)$ is concave up on the interval $0,.$

The graph of $f(x)$ is concave down on the interval $-,0.$

$f(x)$ is decreasing on the interval $-,0.$

$f(x)$ is increasing on the interval $\sqrt[\phantom{2}]{3},.$