The Northern Hemisphere is warmer in spring than in winter, because in spring

A) the days are shorter.

B) it gets more direct sunlight.

C) the Earth is closer to the Sun.

D) it is tilted away from the Sun.

How does carbon become locked inside the earth? A) tree roots expel carbon into the soil as they grow B) humans use machines to pump carbon into large underground tanks C) rocks become richer in carbon as time goes on D) the carbon-rich bodies of

The recent hominin fossil finds from Ileret, Kenya, negate the conventional view held since 1960 that H. habilisand H. erectusevolved one after the other. Instead, they lived side by side in eastern Africa for perhaps half a million years. A. TrueB.

11. Name 3 some sources of CO2.

Leachate is water that runs through garbage. True False

Explain what happens when sugar is fed to yeast cells?

Flower color in a particular plant species is determined by one gene. The alleles of that gene can code for either red flowers or blue flowers. When a red plant and a blue plant are crossed, some of the offspring produce purple flowers.

Which is not an effect of smoking on the cardiovascular system? it contributes to atherosclerosis. it increases the blood's tendency to clot. it increases blood cholesterol. it increases the size of arteries and veins?

Mention the importance of pancreas

What substance is insoluble in water? quartz vinegar sugar salt

Curly hair, large nose, brown eyes: our give the instructions that determine human traits, like these?