What energy flows through organisms and the environment and eventually flows out of the biosphere

Whats a pure substance that cant be broken down into simpler substances by chemical or physical means

Construction work is being carried out for a railway route passing close to a mountain slope. Why is it necessary to cover the mountain slope with a wire mesh? A. Wire mesh transmits electrical pulses to soften the rock. B.

Over a period of 41,000 years, Earth's axis spends a small portion of that time tilted at 0 degrees. True False

Do you think that plant cells are different than human cells? if so, how do you think they might be different? how do you think they might be the same?

What system of the earth would a glacier belong to

What is the difference between B-cell lymphocytes and T-cell lymphocytes? B cells regulate blood pH, and T cells regulate body temperature. B cells are produced in the thymus, and T cells are produced in the bone marrow.

What provides instructions to a eukaryotic cell about living and growing?

Which of the following is NOT a function of skin? to absorb nutrients from food to protect the body from infection to prevent the body from drying out to protect the body from injury

When scientist designs a space probe to detect life on a distant planet, what kind of things should it measure?

Paul's company commissioned some geological studies on some undeveloped arable land. The studies found coal deposits but they were estimated to lie at around one thousand feet or more below the surface. What type of coal did they find? A. lignite B.