What does low R-squared value mean. I got .01082 as R-squared

What does low P value mean? I got 0.35 as p-value with confidence level of 0.05

Can You have high low-squared value, but low p-value

what does R-squared and P-value indicate about the graph

How well does the linear model describe your data when you have low R-squared and low p value

Are there problems with the data when you have low R-squared or low p value. Explain

This is a regression test about tree height Vs. tree diameter.

What would be the null and biological hypothesis for the tree height and tree diameter?