What is a nebula?

•the core of a massive star

•a cloud of gas and dust in space

•a swirling disk with a lot of gravity

•the debris remaining after a supernova

It is the transfer of energy from one organism to another in an ecosystem in a line.

Describe the movement of water up to plant

Yellow seed color is dominant over green. What is the phenotype of an offspring that is Yy?

In order of their occurrence, list and describe the 8 steps of meiosis. You may provide an illustration if you prefer, but you must name the steps.

A mutation in a certain type of bees allows for the bees to pollenate only one type of flower. How could this mutation be both a benefit and risk to the organisms? Justify your response in two or more complete sentences.

What type of blood vessel usually carries oxygen rich blood

Give four reasons why organic material is good for the soil.

What is true about psychosocial changes observed in adolescents? select all that apply?

This causes substances to move across the cell membrane, against the concentration gradient. Select one: a. active transport b. neutral transport c. passive transport d. hydrophobic transport

1. The nerve impulse is an electrical current that travels along dendrites or axons. True or false