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Mamont248 [21]
3 years ago
14

1. Around 2.5 million years ago, we have evidence of the first:

Biology
1 answer:
Usimov [2.4K]3 years ago
4 0
B I believe humans were around at that time
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A. Mutualism<br>B.Commensalism<br>C.Parasitism<br>D.Predation​
KIM [24]

Answer:

D.Predation

Explanation:

Living organism interact with one another in their natural environment. The interaction of two organisms is called SYMBIOSIS. Symbiosis, however, can be of different types depending on how the organisms relate. One type of symbiotic relationship between organisms is called PREDATION.

Predation is a relationship between two organism in which one organism called PREDATOR kills and feeds on the other organism called PREY in order to obtain energy. In this question, a Manta Ray and a zooplankton is shown.

The Manta ray is described as an aquatic organism that feeds on tiny species like fishes while the zooplankton is a tiny organism found in water bodies. The Manta Ray is the predator that kills and feeds on the zooplankton, hence, the relationship is a PREDATION.

6 0
3 years ago
Is the Earth dying? if so answer, and put the reason's why Earth is dying and what we can do to help Earth stop dying.
GenaCL600 [577]

Answer:

Earth has been our place for many years. all inhabitants on earth are causing great destruction. along the way we tried to resolve issues yet some we couldn't figure out. the one we couldn't figure out had made a great impact on our world today. Just how do we stop it? Many ways actually, taking pollution for example. pollution is a great cause for why earth isn't as lively as before. along the years we've polluted 92% of the earths air. causing us to breathe unhealthy air. We can easily fix this problem with finding new ways to get somewhere like riding a bike or taking an energy efficient car. Therefore, we humans have change the world dramatically by doing good things and bad things, too. but in the end we are the ones causing earth to nearly give up, so we can also be the ones to let the earth forgive.

hope this helps you out!

TIP: change it up so you don't do plagiarism:)

 

3 0
3 years ago
Which of the following does NOT describe a basic regulator of digestive control?-Short reflexes act locally in the GI tract.-pH,
spayn [35]

Answer:

conscious neural control

Explanation:

Neural control of digestive tract is unconscious achieved via the autonomic nervous system.

Local nervous system of the digestive system is called the enteric or intrinsic nervous system. The major components of this nervous system are two networks or plexuses of neurons:

• The myenteric plexus – controls digestive tract motility

• The submucous plexus - regulates gastrointestinal blood flow and controls epithelial cell function.

3 0
3 years ago
How do earths major ecosystems differ
lakkis [162]
What is this for is it biology
8 0
3 years ago
Read 2 more answers
Describe the stages of photosynthesis. use the terms thylakoid, light-dependent reactions, and light-independent reactions in yo
TiliK225 [7]
<span>It is process through which plants and other photoautotrophs generate carbohydrate and oxygen from carbon dioxide, water and light energy in chloroplast. It is two stage reaction- 1.Light dependent reaction- in this sunlight is absorbed by chlorophyll and converted into chemical energy and stored in the form of NADPH and ATP. It takes place in thylakoid membrane in chloroplast. 2.Light Independent Reaction- in this energized electrons from the light dependent reaction provides the energy to form carbohydrate from carbon dioxide molecules. It is known as Calvin cycle.</span>
3 0
3 years ago
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