Why can black holes not be seen?

They have too much gravity for light to escape.

They are hidden in interstellar dust.

They exist only behind other stars.

Scientists don't know where to look for them.

Has many sets of pipes controlled from several keyboards, including a pedal keyboard.

Match the organelle with its description. responses may be used multiple times or not at all. (type in the letters representing your answers in the below box. no spaces or commas are needed in between answers.) a. endoplasmic reticulum b.

What is the large spherical organelle responsible for the control of all cellular processes called?

Which best describes how our understanding of DNA and inherited traits has changed over time

What does mitosis do that the cell would do wrong if it just split down the middle in cell division

Which is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation? free of known diseases cost-effective to raise same DNA as humans quick breeding

Why are cell walls important to plants?

Explain the concept of absolute zero.

The cycle repeat when the carbon stored in the atmosphere as carbon dioxide gas is taken

Which phrase describes the study of ecology? a. transfer of light energy to chemical energy b. organisms that reproduce and maintain structure c. comparing biotic and abiotic ecosystems d. how living things are interconnected with their environment