Which statement describes double fertilization in an angiosperm?

a. two egg cells are fertilized within each ovule.
b. a sperm nucleus fuses with an egg cell and a sperm nucleus fuses with polar nuclei.
c. two sperm are required for fertilization of one egg cell.
d. a flower can engage in both self-pollination and cross pollination.
e. one sperm fertilizes the egg while two polar nuclei fuse with a second egg.

If vegetable oil is made out of veggies, then what is baby oil made out of?

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?