Which of these events occurred in the Mesozoic era? First mammals First cyanobacteria First bacteria First organisms that have the ability to photosynthesize

Q: Explain about fossil record

A: A group of fossils that have been analyzed, after which they have been sorted into chronological and…

Q: Describe in your own words how the Earth’s layers were formed

A: Earth is the planet on which we live.

Q: Investigate and describe how prokaryotic cells photosynthesize without having chloroplasts.

A: This answer is for the first part of the question. In order to get the answer to the second part of…

Q: Give two reasons why the evolution of multicellularity was important. Edit View הזחן

A: Evolution is the process by which simple character Is converted into complex ones .

Q: What event is thought to have contributed to the evolution of eukaryotes? a. global warming b.…

A: Eukaryotes can be defined as organisms that comprise of eukaryotic which includes the protists,…

Q: Cuvier's idea of catastrophe related to asteroid collisions understanding that geological change…

A: Theory of catastrophes by George's Cuvier According to this theory, fossil show that animal and…

Q: Which of the following describes the organisms and/or processes that were most influential in the…

A: The earth is one of the eight planets revolving around the sun. It is estimated that earth have been…

Q: Original cells were anaerobic and prokaryotic cells Eukaryotes evolved Multicellular organisms…

A: Evolution is a mechanism that causes changes in a population's genetic material over time. The…

Q: The first forms of life on Earth were ________. a. plants b. microorganisms c. birds d. dinosaurs

A: Earth  can be defined as the third  planet of the sun and the only astronomical object  that is…

Q: Before the emergence of life of what gases was the earth's primitive atmosphere constituted?

A: the primitive atmosphere was reducing in nature it had little or no oxygen  it was rich in water…

Q: Event How Long Ago? # Organisms Extinet Causes Cretaceous

A: Cretaceous extinction :  Cretaceous extinction took place about 66 millions ago . Organisms which…

Q: Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The…

A: All living organisms are made up of organic components like carbohydrates, proteins, lipids, etc.

Q: The map below shows how the continents once were connected together (link to bigger map if you need…

A: Evolution is a step by step and gradual process that took millions of years to attain stability. It…

Q: In what order did events occur that led to life on Earth? (1) appearance of aerobic organisms, (2)…

A: C is possible right answer

Q: The early atmosphere lacked which gas? 1. carbon dioxide 2. oxygen 3. amonia 4. nitrogen

A: The early atmosphere was likely to contain a lot of carbon dioxide and water vapor because it was…

Q: Describe the conditions that scientists think existed on early Earth.

A: Introduction  The origin of life on earth can be traced back to 3.4 billion years ago and as we now…

Q: Describe what the early atmosphere was like and what cause a large amount of oxygen (O2) to build up…

A: Early atmosphere  Around 4.6 billion years ago, the Earth was formed from a heated mixture of gases…

Q: Marine Biology a) Despite being so large, the ocean contributes to (more or less) primary production…

A: The question seem to have an incomplete part (Small things have more_____________). So, I am…

Q: an abundance of ______________ in earth's early atmosphere would have interfered with assembly  of…

A: Organic molecules are molecules found in all the living organisms. These molecules are formed by a…

Q: Assuming that the early lithosphere had already been created, which sphere (the atmosphere or the…

A: Introduction The Stiff, Outermost Shell Of A Terrestrial-type Planet Or Natural Satellite Is Called…

Q: Cenozoic Era

A: The Cenozoic era began about 66 million years ago and continues into the present, is the third era…

Q: The first cells were probably (a) photosynthetic (b) aerobes (c) anaerobes (d) a and b (e) a and c

A: The first photosynthetic bacteria appeared about 2 billion years ago and they are able to produce…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Explain how living things recycle oxygen in Earth’s atmosphere.

A: Atmosphere  Atmosphere is the blanket of mixture of gases. The earth's atmosphere is due to the…

Q: What evidence did Lord Kelvin and Charles Darwin each use to support their conclusions about the age…

A: Kelvin evidence:- Based on the time required for an initially uniform and hot thermal structure to…

Q: Adaptive radiation

A: Evolution evolution is a process by which organisms adapt and grow to serve better in their natural…

Q: The ancestor of the chloroplasts found in green algae was most likely; A free living photosynthetic…

A: Chloroplast is the cell organelle which is responsible for carrying out photosynthesis. It helps the…

Q: Below are some key events that took place during the long history of life on Earth. Arrange them in…

A: Constant change has characterized earth since its beginning some 4.5 billion years ago. life…

Q: Based upon your knowledge of photosynthesis and cellular respiration, which of the following types…

A: Photosynthesis is the process by which the plants use water, carbon dioxide and prepare their food…

Q: What was the most significant contribution of early photosynthetic organisms to Earth’s environment?

A: Photosynthesis is preparation of food by the use of light and carbon-dioxide gas.

Q: A. What is the PROTEROZOIC LIFE? B. Discuss the Great Oxygenation Event. C. Discuss the CAMBRIAN…

A: Geological time scale is a evolutionary event  which determines how the life appear , its…

Q: The first forms of life on Earth were thought to be_________. a. single-celled plants b. prokaryotes…

A: A) single celled plants

Q: The fossil record shows that over time:

A: Fossils are the remaining parts or traces of old life that have been preserved by natural cycles,…

Q: Arrange in chronological order the evidence that life transitioned from aquatic environments to…

A: Introduction In contrast to land-based terrestrial ecosystems, an aquatic ecosystem is one that…

Q: Postulate a theory on how life started until multicellularity

A: The primitive earth's reducing environment will aid in the formation of organic compounds through…

Q: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?

A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…

Q: The first forms of life on Earth were a. plants b. microorganisms c. birds d. dinosaurs

A: According to research on fossils, life first appeared on earth 3.5 billion years ago, making it 4.5…

Q: What is the change between the paleolithic era and the neolithic era? What is the Neolithic…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage…

A: The earth is approximately 4.54 billion years ago and the conditions at that time were not meant for…

Q: The evolution of eukaryotes was most directly enabled by which of the following? a. Diversification…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: The evolution of ________ resulted in the eventualformation of the ozone layer.a. DNA-based…

A: Evolution is the process of the gradual accumulation of genetic variations.

Q: Biology Unit 4 Assess Photosynthesis is the process through which an organism internally makes food…

A: It is the process by which plants and certain organisms transform light energy into chemical energy…

Q: Why did the evolution of multicellular organisms such as plants and animals have to be preceded by…

A: evolution is a process or a theory that describes how the organisms developed from simple organic…

Q: Single-celled Eukaryotes were preceded by what environmental development on Earth? O a. The forming…

A: Eukaryotes are the organisms having well defined nucleus with cellular organelles such as…

Q: Name three different sources of energy that could have powered reactions on early earth to form…

A: The origin of simple organic compounds or monomers took place by the gases present in the primitive…

Q: Put the following events in chronological order. First protocell forms First prokaryote First…

A: Origin of life on Earth still seems unsure. But different scientific theories about this are -…

Q: Which sequence of events accurately describes the history of the planet (from oldest to youngest)?

A: The history of our planet, Earth, started with the formation of the solar system. The solar system…

Q: Solid wastes produced from burning of fossils fuels is: A) Carbon dioxide B)Water vapor Ash Sulfur…

A: Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.