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Sonja [21]
3 years ago
9

What are two reasons why terrestrial plants formed closer to the sun after the supernova event that initiated the formation of t

he solar system
Biology
1 answer:
jasenka [17]3 years ago
6 0

Answer:

- They are made of denser objects, which can condense at relatively high temperatures;

- They are made of heavier elements, which have a stronger gravitational attraction to the Sun;

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Which best explains why angiosperms are the most diverse and successful plant group today?
Arturiano [62]

Angiosperms are the most diverse and successful plant group. It has double fertilization which leads to the formation of an endosperm. It also has a stamen with two pollen sacs. It has a phloem tissue that is composed of sieve tubes and companion cells.

5 0
3 years ago
Read 2 more answers
Explain the 6 steps of how Darwin theorized how the finches formed new species:
Scilla [17]
Overproduction
Most species produce more offspring than can survive.

Competition
Since living space and food are limited, organisms must compete for the necessities.

Variation
Differences between individuals in a population.

Adaptations
Any kind of inherited trait that improves an organism's chances of survival.

Natural selection
The environment selects organisms with optimal traits to be the parents of the next generation.

Speciation
Over many generations, favorable adaptations accumulate and may result in a new species.
8 0
3 years ago
What creates biomass
OLga [1]

Answer:

cow dung is the source of biomass

Explanation:

Biomass is renewable organic material that comes from plants and animals. ... Biomass contains stored chemical energy from the sun. Plants produce biomass through photosynthesis. Biomass can be burned directly for heat or converted to renewable liquid and gaseous fuels through various processes.

6 0
2 years ago
You are a molecule of phosphorus. Choose a starting point in the process you would go through to move through the entire cycle.
noname [10]

Answer:

First I'd be found in rocks. Erosion would wash me into the soil. Then I'd be absorbed by plants, fungi or microorganisms so they can grow. Animals would get me by eating the plants or drinking the water that eroded the rock. The plants and animals die and I'm absorbed back into the soil.

Explanation:

Phosphorus Cycle Steps

The phosphorus cycle is a slow process, which involves five key steps.

Weathering

Since the main source of phosphorus is found in rocks, the first step of the phosphorus cycle involves the extraction of phosphorus from the rocks by weathering. Weather events, such as rain and other sources of erosion, result in phosphorus being washed into the soil.

Absorption by Plants and Animals

Once in the soil, plants, fungi, and microorganisms are able to absorb phosphorus and grow. In addition, phosphorus can also be washed into the local water systems. Plants can also directly absorb phosphorus from the water and grow. In addition to plants, animals also obtain phosphorus from drinking water and eating plants.

Return to the Environment via Decomposition

When plants and animals die, decomposition results in the return of phosphorus back to the environment via the water or soil.  

Plants and animals in these environments can then use this phosphorus, and step 2 of the cycle is repeated.

Human Impact on the Phosphorus Cycle

Humans have had a significant impact on the phosphorus cycle due to a variety of human activities, such as the use of fertilizer, the distribution of food products, and artificial eutrophication. Fertilizers containing phosphorus add to the phosphorus levels in the soil and are particularly detrimental when such products are washed into local aquatic ecosystems. When phosphorus is added to waters at a rate typically achieved by natural processes, it is referred to as natural eutrophication. A natural supply of phosphorus over time provides nutrients to the water and serves to increase the productivity of that particular ecosystem. However, when foods are shipped from farms to cities, the substantial levels of Phosphorus that is drained into the water systems is called artificial or anthropogenic eutrophication. When levels of phosphorus are too high, the overabundance of plant nutrients serves to drive the excessive growth of algae. However, these algae die or form algae blooms, which are toxic to the plants and animals in the ecosystem. Thus, human activities serve to harm aquatic ecosystems, whenever excess amounts of phosphorus are leached into the water.

8 0
2 years ago
A student measured the mass and volume of a metal sample using a triple beam balance and a graduated cylinder. The sample has a
alexdok [17]

Answer:

d=3.79\ g/cm^3

Explanation:

Given that,

The mass of a sample, m = 16.7 grams

Volume of the sample, V = 4.4 cm³

We need to find the density of the metal sample.

Density = mass/volume

Substituting all the values,

d=\dfrac{16.7\ g}{4.4\ cm^3}\\\\=3.79\ g/cm^3

So, the density of the metal sample is 3.79\ g/cm^3.

5 0
2 years ago
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