Adaptations
A newly formed volcanic island has the following conditions: No freshwater sources; Constant strong winds (40–60 mph); Black lava rock that reaches 149 degrees F during the day; Frequent seabird colonies that leave nutrient-rich guano; Very few flowering plants, but many lichens and hardy grasses; Numerous predatory gulls that hunt by sight. A small population of insect-eating lizards colonizes the island. Over the next 500,000 years, natural selection acts on the population. Which combination of adaptations would most likely evolve?
Bright blue coloration, long slender legs, thin skin with high water permeability, and diurnal activity. Dark coloration, adhesive toe pads, highly efficient kidneys that conserve water, cryptic patterning, and crepuscular (dawn/dusk) activity. White coloration, reduced kidney function, large sail-like fins for thermoregulation, and dependence on freshwater drinking. Large body size, thick insulating fur, poor climbing ability, and increased daytime activity.
What do fossils tell scientists about organisms that lived in the past?
Fossils provide evidence about ancient life um like what organisms looked like and how they lived and how species have changed over time.
Wemmbu
Is a fox a fox
depends so u got it wrong.
6
7777
What do ducks use webbed feet for?
Swimming
A fossil is found deep underground in a rock layer below another fossil. Which fossil is older :D
The deeper fossil duh
0 i dont like pineapples
Two populations of the same species become separated. After thousands of generations, they can mate but produce sterile offspring. Are they still the same species? Why?
No :3 under the species concept thingy, they are considered different species because they cannot produce fertile offspring, meaning reproductive isolation has occurred
2.01
Why would a white coat be disadvantageous for an Arctic predator if the Arctic remained snow-free for thousands of years? Name the TYPE of evolution :D
A fossilized organism is found in a rock layer dated 120 million years ago. Another fossil from the same layer contains a mutation that appears in all later species but none before it. What can scientists guess????
The mutation likely appeared around or before 120 million years ago and became an important inherited trait.
an+1=2anan2+3
If a1=2a_1=2a1=2, find:
limn→∞an\lim_{n\to\infty} a_nn→∞liman
bro idk but u got it wrong anyway loser
What is a species :>
A species is a group of organisms that can reproduce and have offspring that can also reproduce.
Is aryz gonna cook
prob idk and idgaf
A cave fish loses its eyesight over thousands of generations. Why might natural selection favor this change?
Evolution favors traits that increase overall reproductive success, not just survival.
A fossil layer contains two species: Species a appears in older layers and disappears gradually. Species b appears in younger layers and a modern species. What does this suggest about Species B? :<
Species B is a transitional species that evolved from Species A
How cooked are we (get the answer exactly right)
Sike it wasnt a number we're cooked either way :3
A group of birds splits into two populations after 50,000 years, they have different calls diets, and mating behaviors. However, rare individuals from each group can still produce offspring. Are they separate species?
Not rlly ~ It depends on the species concept used. they may still be one species because they can produce fertile offspring.
Who is the guy with fire on his head and on Unstable SMP
population of lizards has two alleles at one gene:
A drought makes thick skin advantageous, but a new fungal disease kills 80% of thick-skinned lizards.
After many generations, will allele A increase, decrease, stabilize at an intermediate frequency, or become fixed? Explain your answer using natural selection, fitness, and evolutionary trade-offs.
Allele A will most likely stabilize at an intermediate frequency (neither disappear nor become fixed). During the drought, thick skin (A) helps lizards conserve water, increasing their survival. However, the fungal disease kills 80% of thick-skinned lizards, giving thin-skinned (a) lizards an advantage against the disease. Because each allele has both a benefit and a cost, natural selection favors neither one completely. The exact equilibrium frequency depends on how severe the drought is compared to how deadly the fungus is, but both alleles are likely to remain in the population.
A fossil layer contains a species that appears suddenly, remains unchanged for millions of years, then disappears abruptly. What evolutionary pattern does this most likely represent?
Punctuated equilibrium :>
No
Two populations of frogs live on opposite sides of a mountain. They look identical and can mate in captivity but in nature they never mate because they have different mating calls. Are they the same species >:3
No >-< they are likely separate species because they are isolated by behavior (different mating calls), even though they can physically reproduce. (AKA BEHAVIORAL ISOLATION *COUGH COUGH BOWONNNN*
Will we win #2
um no ur ego is massive YK WHAT ELSE IS MASSIVE