Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
Answer:
Here is the plato answer !!!
FS fs Fs fS
fs FfSs ffss Ffss ffSs
fs FfSs ffss Ffss ffSs
fs FfSs ffss Ffss ffSs
fs FfSs ffss Ffss ffSs
According to the Punnett square, 4/16 plants will have red flowers and green seeds.
So, (4 ÷16) × 100 = 25% chance of obtaining offspring with red flower and green seed.
Explanation: It's 100% right.
A. is slowed by limiting factors. B. exhibits a period of rapid growth as the population size increases. ... Like logistic growth, exponential growth can be plotted in the shape of an S curve.
The correct effects of Volatiles are; Volatiles may warn nearby plants of the same species, so that they can mount a biochemical defense. They may also attract parasitoid wasps to attack an insect herbivore. Volatile terpenoids and other compounds emitted from leaves in response to insect damage allow insects parasitoids such as parasitic wasps and predators to distinguish between infested and non infested plants, and thus aid in locating hosts or prey.
Each male and female sex cell has 46 chromosomes in it. The number of chromosomes are reduced to half(23), so that when the sex cells combine, they also add up to 46(23+23). If the chromosomes did not reduce to half, the number of chromosomes would be off balance and the gamete would not survive.