Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud its temperature stays well below 14 million kelvin. its volume shrinks and density increases due to gravity. its temperature surpasses 14 million kelvin. it is spread out, with a greater volume and lesser concentration of elements. its hydrogen atoms shed their electrons its hydrogen atoms retain their electrons. url(…? ts=636227400589600000)

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

The response is the basis for vaccination. primary secondary tertiary none of the above