Doppler blueshift is used in astronomy to determine relative motion: The Andromeda Galaxy is moving toward our own Milky Way galaxy within the Local Group; thus, when observed from Earth, its light is undergoing a blueshift.
Answer:
B) the health and abundance of old growth forests.
Answer:
The correct answer is rotating crops
Explanation:
Composting, adding organic material, rotating crops and growing cover crops will all help improve soil quality in your garden. Even if you only practice a few of these tips you'll go a long way toward building the type of soil where plants thrive and grow happily (brainliest please
Answer: Embryo sac is the megaspore mother cell.
Explanation:
The bisporic embryo sac can be defined as the comprises of the nuclei that is obtained from two units of the megaspore tetrad on the other hand, the tetrasporic embryo sac comprises of four units of megaspore tetrad. The megaspore mother cell undergoes meiosis to produce megaspore tetrad or four haploid megaspores.
