Which term means spitting blood stained sputum derived from the lungs or bronchial tubes?

This question is for science: How did trilobites become extinct?

As trees get larger and the number of leaves increases, transpiration rates rise and demand for water increases.

What is a collapsing waves

Which of the following is NOT a phase in the menstrual cycle? A. ovulation B. luteal C. gastrulation D. follicular

What is the function of a cell's premeable plasma membrane?

Forest elephants in Africa have been confirmed as a different species from the larger savanna elephant seen here. Scientists believe the savanna elephant is as different from the forest elephant as Asian elephants are from woolly mammoths.

What competitive processes or forces are ever-present during a star's lifetime?

Which occurs during transcription? A. DNA is copied to create a second DNA strand. B. mRNA codons and tRNA anticodons assemble amino acids. C. DNA is unzipped with the aid of DNA polymerase. D. mRNA is synthesized from a strand of DNA.

In a beach ecosystem, what can limit growth of organisms? A. ocean and rocks B. oxygen C. abundant food source D. moderate temperatures

What process do the arrows for oxygen going in and water coming out represent in the Figure 9-2 diagram of the mitochondria?