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r-ruslan [8.4K]
3 years ago
14

Which phrase best describes evolution? (If I get another link-)

Biology
1 answer:
Anna [14]3 years ago
8 0

C. <em>A process of change in organisms over a period of time</em>

Please mark Brainliest if this was helpful! Also sorry about the link bots. They suck.

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HELP SOS PLEASE !!!!! (ONLY CORRECT ANSWERS PLEASE)
Phantasy [73]

Answer:

1- Option A) describes an index fossil. Trilobite existed for a short time, but was abundant and lived in many locations.

2- Option B) Continents were once joined and have since drifted apart.

Explanation:

1) Fossils are animal and vegetable rests found in different strata of sedimentary rocks. Sedimentary layers deposit chronologically, so they are used to reflect history. They keep in each layer some of the forms of life that inhabited that area in the past. These fossils turn to be very useful while dating ages. The term Index fossils refer to those fossils that only existed in a given era or geological period during evolution.  

Index fossils must:    

• Be easily recognizable and distinguishable from all the other fossils

• Have lived in a relatively short geological period

• Present a wide geographic distribution

• Have lived in different sedimentary basins

• Appear in different types of rocks

• Be abundant

<em>A) Trilobite existed for a short time, but was abundant and lived in many locations. </em>The species accomplish the requirements. It is easily recognizable, had a wide geographic distribution, was abundant, and lived for a short time.  

2) The tectonic plates theory states that there is a continual movement of the crust. It explains the movement of the different plates and their directions and interactions. The continental drift theory explains how these movements have been taking place since millions of years ago. When continents were together in a unique continent, many species used to inhabit it. When plates started to separate, they took some of these species that got apart by the ocean. Some species were already dead and fossilized, while some other organisms died during continental drift and got fossilized after the divergence. <em>The existence of the same fossils, placed in the same layers and of the same age, suggests that they used to inhabit the same area and died during the same time, meaning that continents were together when they got fossilized. </em>

5 0
3 years ago
EZ WORK HELP EZ POINTS EZ BRAINLIEST 3RD GRADE WORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
OLEGan [10]

What do you know about ecosystems?

An ecosystem is a community of living things in a habitat that are in conjuction with the ninliving things in tehri habitat. The abiotic and biotic factros living together in a habitat in harmony that are all linked together by biochemical cycles and energy flows.

What living things do you think we would find in a rainforest ecosystem? What might those living things need to grow?

Living things that would be found in a rainforest ecosytem include the animals liek jaguars, spider monkeys, tapirs, camians, sloths, harpy eagles, mosquitos, ants, clouded lepord and amur leporad, apes liek chimpanzees and organguatans, tigers, brids of paradise, gorillas, elephants, frogs, bats, katydids, and so many more! Plants include pitcher plants, orchids, venus fly trap and otehr carnivorous plants, Açai Palm, rubber trees, various palm tree species, vines, bamboo, banana trees, strangler figs, giant red cedar, and many other flower tree, grasses, planst, bushes, fruit, vines, and otehr vegetation species. These living thinsg need to grow fruit, in size, in numbers, and many ways the rainforest.

What living things do you think we would find in a desert ecosystem? What might those living things need to grow?

Cati, succulents, tarantuals, scorpians, gila monster, cactus blossoms, sandwinders, dry grasses, coyotes, jackals, dingos, fennec foxes, vultures, gazelle, snakes and vipers, lizards, (remeber the artic ecosytems are deserts too! ) penguins, polar bears, seals, killer whales, lemmings, elk, walrus, beluga whales and narwhal, and so many more! these living things need to grow their fight and defense system features like the narwal's horn or walrus's tusks.

What living things do you think we would find in a savanna ecosystem? What might those living things need to grow?

In a savanna many things live here, porcupines, acacia trees, cheetahs, lions, lepords, hyeans, zebras, elephants, baboons, giraffes, rhinoceros, crocodiles, hippopotamus, termites, ostriches, ardvarks, anteaters,snakes, boa constrictors, kangaroos, scorpions, tartantuals, buffalo, baobob, scutch grass, and many more. These living things need to grow in their size to survive and grow in their knowledge of survival for life.

What living things do you think we would find in a coral reef ecosystem? What might those living things need to grow?

In a coral reef system you would find numerous shark species, coral, kelp, seaweed, sponges, algae, sea urchins, dolphins, sea turtles, seahorses, clownfish, starfish, jellyfish, mnay many species of fish, lobster, shrimp, crabs, snails, octopuses, rays, clams, worms, eels, manatees, and so many more. These plants need to grow to create ecosyetems and to create dissolved oxygen. Coral reefs need to grow to keep the habitat alive and going, to also fight the dwindiling reef numbers.

5 0
4 years ago
In 1959, doctors began using the powerful antibiotic methicillin to treat infections of Staphylococcus aureus, but within two ye
Mama L [17]

Hi and there u go

c.)Staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. Over time, these resistant individuals became increasingly common.

Hope it helps!

4 0
3 years ago
← 10 Newtons + → 30 Newtons
madreJ [45]

Answer:

The net force will be →20 N.

Explanation:

Given data:

F  = 30 N

F = 10 N

ΣF = ?

Solution:

Formula:

ΣF = + F  - F

ΣF = 30 N - 10 N

ΣF = 20 N

The net force will be →20 N.

6 0
3 years ago
How aquatic plants get oxygen for photosynthesis?
charle [14.2K]

Answer:

Explanation:

They take in carbon dioxide from the water and use the sunlight through the water and produce oxygen

6 0
3 years ago
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