How many chromosomes are in a human sex cell?

What will happen if deforesation continues to destroy the green plants on the planet

Which of the raw materials used in photosynthesis has been linked to global warming? A. water B. oxygen C. carbon dioxide D. sugar

Discribe 2 other patterns listed in lesson

Thyroid-stimulating hormone stimulates the thyroid gland to secrete sex hormones. True or False?

Which of the following is true of all greenhouse gases A) They are naturally occurring. B) They exist in fixed quantities. C) They trap energy in the atmosphere. D) They reflect incoming solar radiation.

The electrons of an atom occupy one or more areas of space called

The nucleus and other organelles of a neuron are primarily housed in which part of the cell? axon dendrite glial cell cell body none of the choices is correct.

What does every letter of the mRNA strand correspond to? (there is no chain to go with this question)

Is Sirius B brighter or dimmer than the sun?

The chart below shows examples from two groups of organisms, multicellular and one-celled. the tissues and organs in group a perform functions that are