Answer: C- ecosystem
An ecosystem is a biological community in which living beings interacts with their non-living environment. An ecosystem consists of abiotic ( non-living factors like water, sunlight, wind and soil) and biotic factors such as plants and animals. Ecosystem allows not only the interaction of abiotic and biotic factors but it favors the interaction between the living species. For example animals are dependent upon plants so as to derive their food. The coexistence of organisms favors the diversity of land forms on earth.
Communities of organisms coexist in organized, balanced ecosystems.
I believe the answer is H for when you bounce it, it has stress when it hits the floor and then goes up giving it kinetic
If the wavelength of a sound wave increases and the frequency of the sound wave does not change, the speed of the wave will increase.
Ans: D
Explanation
The sound wave speed is given by E=fλ, where f indicates its frequency and λ indicates its wavelength.
From the equation, it is evident that the sound speed is proportional to both frequency and wavelength.
Here, as wavelength increases, wave speed increases provided there is no change in frequency.
Franklin must not drive through a flood for there may
no road at all under the water, unless he is familiar with the road and the
flowing water is below one foot.
Moreover, if negotiating a flooded section of
road, he must drive in the middle where the water will be at its shallowest and
he must not drive through water against approaching vehicle to consider other
drivers.
For displacement apply Pythagorean theorem
