1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ipatiy [6.2K]
3 years ago
9

A zygote forms when a sperm cell penetrates and fertilizes an egg. a. True b. False

Biology
1 answer:
Georgia [21]3 years ago
4 0

Answer:

the answer is true. a zygote does

You might be interested in
Why does Congress want the FDA to regulate UVA labeling as well?
pantera1 [17]

Answer:

because it causes cancer

Explanation:

4 0
2 years ago
Read 2 more answers
Who is Rosalind Franklin?
scZoUnD [109]
She was an English chemist and x ray crystallographer who made contributions to the understanding of the molecular structures of DNA,RNS,viruses,coal, and graphite<span />
3 0
3 years ago
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
How is the movement of matter through the biosphere different from the flow of energy?
strojnjashka [21]
The flow of energy moves through living organisms via the food chain. A food chain is a diagram which shows how every living thing gets energy to live. Plants use the sun, nutrients in the soil and water to generate energy. Herbivores eat the plants to generate energy to survive. Carnivores eat the herbivores to generate energy. 
<span>Matter moves through the biosphere by being cycled through various organic and inorganic stages. They are neither created nor destroyed. The biosphere is known as a closed system so no elements can escape. They are continually being recycled. </span>
8 0
3 years ago
What caused the uplift of the Himalayas?
andrew11 [14]

The ongoing active collision of the Indian and Eurasian continental plates challenges one hypothesis for plate motion which relies on subduction. ... The collision and associated decrease in the rate of plate movement are interpreted to mark the beginning of the rapid uplift of the Himalayas.

5 0
2 years ago
Other questions:
  • Organisms that reproduce asexually usually do so by a form of cell division called...
    13·1 answer
  • Sometimes folding causes layers to what
    11·1 answer
  • Why do you think that heat-related mortality can be greater in cities at higher latitudes than in more tropical cities?
    11·2 answers
  • What does the dotted line between the water molecules represent?
    11·1 answer
  • Jason’s team studied the________ , which measures incoming solar radiation and outgoing terrestrial infrared radiation.
    5·2 answers
  • Which statement below best describes how biodiversity contributes to the sustainability of an ecosystem?
    7·1 answer
  • The force of the Earth's gravity on an object gives the object its __________.
    5·2 answers
  • Given that equal amounts of the different mRNA’s were injected into fertilized frog eggs, which of the following conclusions is
    7·1 answer
  • Help Me To Check With This
    12·1 answer
  • 2) please fill in the blanks with the following options.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!